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Finding the Fourth Proportional to 71,700.08, 107,554.16 and 21,781.80

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Solution

The fourth proportional to 71,700.08, 107,554.16 and 21,781.80 is: 32,673.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,700.08 : 107,554.16 = 21,781.80 : x
  2. Step 2: Convert to fraction form
    71,700.08/107,554.16 = 21,781.80/x
  3. Step 3: Cross multiply
    71,700.08x = 107,554.16 × 21,781.80
  4. Step 4: Simplify right side
    71,700.08x = 2,342,723,256.74
  5. Step 5: Solve for x
    x = 2,342,723,256.74/71,700.08
  6. Step 6: Final answer
    x = 32,673.93

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1.5x scale

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.