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Finding the Fourth Proportional to 64,144.20, 88,503.90 and 38,643.78

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Solution

The fourth proportional to 64,144.20, 88,503.90 and 38,643.78 is: 53,319.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,144.20 : 88,503.90 = 38,643.78 : x
  2. Step 2: Convert to fraction form
    64,144.20/88,503.90 = 38,643.78/x
  3. Step 3: Cross multiply
    64,144.20x = 88,503.90 × 38,643.78
  4. Step 4: Simplify right side
    64,144.20x = 3,420,125,240.74
  5. Step 5: Solve for x
    x = 3,420,125,240.74/64,144.20
  6. Step 6: Final answer
    x = 53,319.32

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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.