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Finding the Fourth Proportional to 65,385.60, 90,232.56 and 37,091.76

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Solution

The fourth proportional to 65,385.60, 90,232.56 and 37,091.76 is: 51,186.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,385.60 : 90,232.56 = 37,091.76 : x
  2. Step 2: Convert to fraction form
    65,385.60/90,232.56 = 37,091.76/x
  3. Step 3: Cross multiply
    65,385.60x = 90,232.56 × 37,091.76
  4. Step 4: Simplify right side
    65,385.60x = 3,346,884,459.71
  5. Step 5: Solve for x
    x = 3,346,884,459.71/65,385.60
  6. Step 6: Final answer
    x = 51,186.87

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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.