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Finding the Fourth Proportional to 66,996.92, 92,448.90 and 38,711.72

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Solution

The fourth proportional to 66,996.92, 92,448.90 and 38,711.72 is: 53,418.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,996.92 : 92,448.90 = 38,711.72 : x
  2. Step 2: Convert to fraction form
    66,996.92/92,448.90 = 38,711.72/x
  3. Step 3: Cross multiply
    66,996.92x = 92,448.90 × 38,711.72
  4. Step 4: Simplify right side
    66,996.92x = 3,578,855,931.11
  5. Step 5: Solve for x
    x = 3,578,855,931.11/66,996.92
  6. Step 6: Final answer
    x = 53,418.22

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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.