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Finding the Fourth Proportional to 72,350.68, 99,841.02 and 42,136.92

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Solution

The fourth proportional to 72,350.68, 99,841.02 and 42,136.92 is: 58,147.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,350.68 : 99,841.02 = 42,136.92 : x
  2. Step 2: Convert to fraction form
    72,350.68/99,841.02 = 42,136.92/x
  3. Step 3: Cross multiply
    72,350.68x = 99,841.02 × 42,136.92
  4. Step 4: Simplify right side
    72,350.68x = 4,206,993,072.46
  5. Step 5: Solve for x
    x = 4,206,993,072.46/72,350.68
  6. Step 6: Final answer
    x = 58,147.25

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1.5x scale

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.