Home / 78,579,974.25-108,485,312.78-52,154,164.08

Finding the Fourth Proportional to 78,579,974.25, 108,485,312.78 and 52,154,164.08

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Solution

The fourth proportional to 78,579,974.25, 108,485,312.78 and 52,154,164.08 is: 72,002,578.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,579,974.25 : 108,485,312.78 = 52,154,164.08 : x
  2. Step 2: Convert to fraction form
    78,579,974.25/108,485,312.78 = 52,154,164.08/x
  3. Step 3: Cross multiply
    78,579,974.25x = 108,485,312.78 × 52,154,164.08
  4. Step 4: Simplify right side
    78,579,974.25x = 5,657,960,803,128,626
  5. Step 5: Solve for x
    x = 5,657,960,803,128,626/78,579,974.25
  6. Step 6: Final answer
    x = 72,002,578.99

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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.