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Finding the Fourth Proportional to 65,607.32, 90,549.70 and 38,748.04

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Solution

The fourth proportional to 65,607.32, 90,549.70 and 38,748.04 is: 53,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,607.32 : 90,549.70 = 38,748.04 : x
  2. Step 2: Convert to fraction form
    65,607.32/90,549.70 = 38,748.04/x
  3. Step 3: Cross multiply
    65,607.32x = 90,549.70 × 38,748.04
  4. Step 4: Simplify right side
    65,607.32x = 3,508,623,397.59
  5. Step 5: Solve for x
    x = 3,508,623,397.59/65,607.32
  6. Step 6: Final answer
    x = 53,479.15

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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.