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Finding the Fourth Proportional to 65,748.76, 90,711.12 and 37,434.40

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Solution

The fourth proportional to 65,748.76, 90,711.12 and 37,434.40 is: 51,646.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,748.76 : 90,711.12 = 37,434.40 : x
  2. Step 2: Convert to fraction form
    65,748.76/90,711.12 = 37,434.40/x
  3. Step 3: Cross multiply
    65,748.76x = 90,711.12 × 37,434.40
  4. Step 4: Simplify right side
    65,748.76x = 3,395,716,264.13
  5. Step 5: Solve for x
    x = 3,395,716,264.13/65,748.76
  6. Step 6: Final answer
    x = 51,646.85

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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.