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Finding the Fourth Proportional to 65,591.20, 98,459.70 and 40,659.40

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Solution

The fourth proportional to 65,591.20, 98,459.70 and 40,659.40 is: 61,034.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,591.20 : 98,459.70 = 40,659.40 : x
  2. Step 2: Convert to fraction form
    65,591.20/98,459.70 = 40,659.40/x
  3. Step 3: Cross multiply
    65,591.20x = 98,459.70 × 40,659.40
  4. Step 4: Simplify right side
    65,591.20x = 4,003,312,326.18
  5. Step 5: Solve for x
    x = 4,003,312,326.18/65,591.20
  6. Step 6: Final answer
    x = 61,034.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.