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Finding the Fourth Proportional to 64,616.32, 96,899.88 and 42,423.76

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Solution

The fourth proportional to 64,616.32, 96,899.88 and 42,423.76 is: 63,619.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,616.32 : 96,899.88 = 42,423.76 : x
  2. Step 2: Convert to fraction form
    64,616.32/96,899.88 = 42,423.76/x
  3. Step 3: Cross multiply
    64,616.32x = 96,899.88 × 42,423.76
  4. Step 4: Simplify right side
    64,616.32x = 4,110,857,253.15
  5. Step 5: Solve for x
    x = 4,110,857,253.15/64,616.32
  6. Step 6: Final answer
    x = 63,619.49

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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.