Home / 77,546,180.78-107,013,406.11-42,738,788.15

Finding the Fourth Proportional to 77,546,180.78, 107,013,406.11 and 42,738,788.15

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Solution

The fourth proportional to 77,546,180.78, 107,013,406.11 and 42,738,788.15 is: 58,979,349.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,546,180.78 : 107,013,406.11 = 42,738,788.15 : x
  2. Step 2: Convert to fraction form
    77,546,180.78/107,013,406.11 = 42,738,788.15/x
  3. Step 3: Cross multiply
    77,546,180.78x = 107,013,406.11 × 42,738,788.15
  4. Step 4: Simplify right side
    77,546,180.78x = 4,573,623,292,999,046
  5. Step 5: Solve for x
    x = 4,573,623,292,999,046/77,546,180.78
  6. Step 6: Final answer
    x = 58,979,349.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.