Home / 72,971,158.65-100,700,206.91-39,931,414.79

Finding the Fourth Proportional to 72,971,158.65, 100,700,206.91 and 39,931,414.79

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Solution

The fourth proportional to 72,971,158.65, 100,700,206.91 and 39,931,414.79 is: 55,105,356.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,971,158.65 : 100,700,206.91 = 39,931,414.79 : x
  2. Step 2: Convert to fraction form
    72,971,158.65/100,700,206.91 = 39,931,414.79/x
  3. Step 3: Cross multiply
    72,971,158.65x = 100,700,206.91 × 39,931,414.79
  4. Step 4: Simplify right side
    72,971,158.65x = 4,021,101,730,858,876
  5. Step 5: Solve for x
    x = 4,021,101,730,858,876/72,971,158.65
  6. Step 6: Final answer
    x = 55,105,356.76

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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.