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Finding the Fourth Proportional to 72,617,697.80, 108,814,572.30 and 62,987,899.40

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Solution

The fourth proportional to 72,617,697.80, 108,814,572.30 and 62,987,899.40 is: 94,384,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,617,697.80 : 108,814,572.30 = 62,987,899.40 : x
  2. Step 2: Convert to fraction form
    72,617,697.80/108,814,572.30 = 62,987,899.40/x
  3. Step 3: Cross multiply
    72,617,697.80x = 108,814,572.30 × 62,987,899.40
  4. Step 4: Simplify right side
    72,617,697.80x = 6,854,001,333,286,426
  5. Step 5: Solve for x
    x = 6,854,001,333,286,426/72,617,697.80
  6. Step 6: Final answer
    x = 94,384,723.57

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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.