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Finding the Fourth Proportional to 64,009.60, 88,380.48 and 38,892.80

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Solution

The fourth proportional to 64,009.60, 88,380.48 and 38,892.80 is: 53,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,009.60 : 88,380.48 = 38,892.80 : x
  2. Step 2: Convert to fraction form
    64,009.60/88,380.48 = 38,892.80/x
  3. Step 3: Cross multiply
    64,009.60x = 88,380.48 × 38,892.80
  4. Step 4: Simplify right side
    64,009.60x = 3,437,364,332.54
  5. Step 5: Solve for x
    x = 3,437,364,332.54/64,009.60
  6. Step 6: Final answer
    x = 53,700.76

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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.