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Finding the Fourth Proportional to 64,279.52, 88,713.65 and 38,800.51

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Solution

The fourth proportional to 64,279.52, 88,713.65 and 38,800.51 is: 53,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,279.52 : 88,713.65 = 38,800.51 : x
  2. Step 2: Convert to fraction form
    64,279.52/88,713.65 = 38,800.51/x
  3. Step 3: Cross multiply
    64,279.52x = 88,713.65 × 38,800.51
  4. Step 4: Simplify right side
    64,279.52x = 3,442,134,739.18
  5. Step 5: Solve for x
    x = 3,442,134,739.18/64,279.52
  6. Step 6: Final answer
    x = 53,549.48

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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.