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Finding the Fourth Proportional to 91,714.71, 126,512.69 and 57,669.30

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Solution

The fourth proportional to 91,714.71, 126,512.69 and 57,669.30 is: 79,549.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,714.71 : 126,512.69 = 57,669.30 : x
  2. Step 2: Convert to fraction form
    91,714.71/126,512.69 = 57,669.30/x
  3. Step 3: Cross multiply
    91,714.71x = 126,512.69 × 57,669.30
  4. Step 4: Simplify right side
    91,714.71x = 7,295,897,985.07
  5. Step 5: Solve for x
    x = 7,295,897,985.07/91,714.71
  6. Step 6: Final answer
    x = 79,549.92

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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.