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Finding the Fourth Proportional to 65,530.52, 90,432.02 and 37,236.20

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Solution

The fourth proportional to 65,530.52, 90,432.02 and 37,236.20 is: 51,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,530.52 : 90,432.02 = 37,236.20 : x
  2. Step 2: Convert to fraction form
    65,530.52/90,432.02 = 37,236.20/x
  3. Step 3: Cross multiply
    65,530.52x = 90,432.02 × 37,236.20
  4. Step 4: Simplify right side
    65,530.52x = 3,367,344,783.12
  5. Step 5: Solve for x
    x = 3,367,344,783.12/65,530.52
  6. Step 6: Final answer
    x = 51,385.90

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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.