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Finding the Fourth Proportional to 64,282.12, 88,718.16 and 38,789.80

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Solution

The fourth proportional to 64,282.12, 88,718.16 and 38,789.80 is: 53,535.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,282.12 : 88,718.16 = 38,789.80 : x
  2. Step 2: Convert to fraction form
    64,282.12/88,718.16 = 38,789.80/x
  3. Step 3: Cross multiply
    64,282.12x = 88,718.16 × 38,789.80
  4. Step 4: Simplify right side
    64,282.12x = 3,441,359,682.77
  5. Step 5: Solve for x
    x = 3,441,359,682.77/64,282.12
  6. Step 6: Final answer
    x = 53,535.25

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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.