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Finding the Fourth Proportional to 65,708.80, 90,687.54 and 37,417.12

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Solution

The fourth proportional to 65,708.80, 90,687.54 and 37,417.12 is: 51,640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,708.80 : 90,687.54 = 37,417.12 : x
  2. Step 2: Convert to fraction form
    65,708.80/90,687.54 = 37,417.12/x
  3. Step 3: Cross multiply
    65,708.80x = 90,687.54 × 37,417.12
  4. Step 4: Simplify right side
    65,708.80x = 3,393,266,566.68
  5. Step 5: Solve for x
    x = 3,393,266,566.68/65,708.80
  6. Step 6: Final answer
    x = 51,640.98

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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.