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Finding the Fourth Proportional to 64,476.80, 96,715.20 and 51,257.60

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Solution

The fourth proportional to 64,476.80, 96,715.20 and 51,257.60 is: 76,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,476.80 : 96,715.20 = 51,257.60 : x
  2. Step 2: Convert to fraction form
    64,476.80/96,715.20 = 51,257.60/x
  3. Step 3: Cross multiply
    64,476.80x = 96,715.20 × 51,257.60
  4. Step 4: Simplify right side
    64,476.80x = 4,957,389,035.52
  5. Step 5: Solve for x
    x = 4,957,389,035.52/64,476.80
  6. Step 6: Final answer
    x = 76,886.40

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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.