Home / 72,257,178.80-99,715,000.92-39,217,426.16

Finding the Fourth Proportional to 72,257,178.80, 99,715,000.92 and 39,217,426.16

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Solution

The fourth proportional to 72,257,178.80, 99,715,000.92 and 39,217,426.16 is: 54,120,099.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257,178.80 : 99,715,000.92 = 39,217,426.16 : x
  2. Step 2: Convert to fraction form
    72,257,178.80/99,715,000.92 = 39,217,426.16/x
  3. Step 3: Cross multiply
    72,257,178.80x = 99,715,000.92 × 39,217,426.16
  4. Step 4: Simplify right side
    72,257,178.80x = 3,910,565,685,624,432
  5. Step 5: Solve for x
    x = 3,910,565,685,624,432/72,257,178.80
  6. Step 6: Final answer
    x = 54,120,099.21

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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.