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Finding the Fourth Proportional to 91,700.80, 126,537.60 and 53,972.80

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Solution

The fourth proportional to 91,700.80, 126,537.60 and 53,972.80 is: 74,476.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,700.80 : 126,537.60 = 53,972.80 : x
  2. Step 2: Convert to fraction form
    91,700.80/126,537.60 = 53,972.80/x
  3. Step 3: Cross multiply
    91,700.80x = 126,537.60 × 53,972.80
  4. Step 4: Simplify right side
    91,700.80x = 6,829,588,577.28
  5. Step 5: Solve for x
    x = 6,829,588,577.28/91,700.80
  6. Step 6: Final answer
    x = 74,476.87

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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.