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Finding the Fourth Proportional to 64,489.76, 96,080.87 and 61,313.65

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Solution

The fourth proportional to 64,489.76, 96,080.87 and 61,313.65 is: 91,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,489.76 : 96,080.87 = 61,313.65 : x
  2. Step 2: Convert to fraction form
    64,489.76/96,080.87 = 61,313.65/x
  3. Step 3: Cross multiply
    64,489.76x = 96,080.87 × 61,313.65
  4. Step 4: Simplify right side
    64,489.76x = 5,891,068,834.88
  5. Step 5: Solve for x
    x = 5,891,068,834.88/64,489.76
  6. Step 6: Final answer
    x = 91,348.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.