Home / 78,541,139,272.80-117,828,254,876.40-25,478,029,073.28

Finding the Fourth Proportional to 78,541,139,272.80, 117,828,254,876.40 and 25,478,029,073.28

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Solution

The fourth proportional to 78,541,139,272.80, 117,828,254,876.40 and 25,478,029,073.28 is: 38,222,410,970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,541,139,272.80 : 117,828,254,876.40 = 25,478,029,073.28 : x
  2. Step 2: Convert to fraction form
    78,541,139,272.80/117,828,254,876.40 = 25,478,029,073.28/x
  3. Step 3: Cross multiply
    78,541,139,272.80x = 117,828,254,876.40 × 25,478,029,073.28
  4. Step 4: Simplify right side
    78,541,139,272.80x = 3,002,031,703,394,764,718,080
  5. Step 5: Solve for x
    x = 3,002,031,703,394,764,718,080/78,541,139,272.80
  6. Step 6: Final answer
    x = 38,222,410,970.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.