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Finding the Fourth Proportional to 65,715.32, 90,655.52 and 43,044.50

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Solution

The fourth proportional to 65,715.32, 90,655.52 and 43,044.50 is: 59,380.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,715.32 : 90,655.52 = 43,044.50 : x
  2. Step 2: Convert to fraction form
    65,715.32/90,655.52 = 43,044.50/x
  3. Step 3: Cross multiply
    65,715.32x = 90,655.52 × 43,044.50
  4. Step 4: Simplify right side
    65,715.32x = 3,902,221,530.64
  5. Step 5: Solve for x
    x = 3,902,221,530.64/65,715.32
  6. Step 6: Final answer
    x = 59,380.70

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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.