Home / 72,502,046.60-108,753,069.90-69,715,128.20

Finding the Fourth Proportional to 72,502,046.60, 108,753,069.90 and 69,715,128.20

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Solution

The fourth proportional to 72,502,046.60, 108,753,069.90 and 69,715,128.20 is: 104,572,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,502,046.60 : 108,753,069.90 = 69,715,128.20 : x
  2. Step 2: Convert to fraction form
    72,502,046.60/108,753,069.90 = 69,715,128.20/x
  3. Step 3: Cross multiply
    72,502,046.60x = 108,753,069.90 × 69,715,128.20
  4. Step 4: Simplify right side
    72,502,046.60x = 7,581,734,210,222,062
  5. Step 5: Solve for x
    x = 7,581,734,210,222,062/72,502,046.60
  6. Step 6: Final answer
    x = 104,572,692.30

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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.