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Finding the Fourth Proportional to 64,939.59, 89,640.45 and 38,104.59

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Solution

The fourth proportional to 64,939.59, 89,640.45 and 38,104.59 is: 52,598.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,939.59 : 89,640.45 = 38,104.59 : x
  2. Step 2: Convert to fraction form
    64,939.59/89,640.45 = 38,104.59/x
  3. Step 3: Cross multiply
    64,939.59x = 89,640.45 × 38,104.59
  4. Step 4: Simplify right side
    64,939.59x = 3,415,712,594.67
  5. Step 5: Solve for x
    x = 3,415,712,594.67/64,939.59
  6. Step 6: Final answer
    x = 52,598.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.