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Finding the Fourth Proportional to 64,342.60, 96,513.90 and 39,766.60

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Solution

The fourth proportional to 64,342.60, 96,513.90 and 39,766.60 is: 59,649.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,342.60 : 96,513.90 = 39,766.60 : x
  2. Step 2: Convert to fraction form
    64,342.60/96,513.90 = 39,766.60/x
  3. Step 3: Cross multiply
    64,342.60x = 96,513.90 × 39,766.60
  4. Step 4: Simplify right side
    64,342.60x = 3,838,029,655.74
  5. Step 5: Solve for x
    x = 3,838,029,655.74/64,342.60
  6. Step 6: Final answer
    x = 59,649.90

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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.