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Finding the Fourth Proportional to 64,458.40, 96,572.40 and 55,242.40

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Solution

The fourth proportional to 64,458.40, 96,572.40 and 55,242.40 is: 82,764.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,458.40 : 96,572.40 = 55,242.40 : x
  2. Step 2: Convert to fraction form
    64,458.40/96,572.40 = 55,242.40/x
  3. Step 3: Cross multiply
    64,458.40x = 96,572.40 × 55,242.40
  4. Step 4: Simplify right side
    64,458.40x = 5,334,891,149.76
  5. Step 5: Solve for x
    x = 5,334,891,149.76/64,458.40
  6. Step 6: Final answer
    x = 82,764.87

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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.