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Finding the Fourth Proportional to 64,281.12, 88,716.78 and 38,788.80

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Solution

The fourth proportional to 64,281.12, 88,716.78 and 38,788.80 is: 53,533.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,281.12 : 88,716.78 = 38,788.80 : x
  2. Step 2: Convert to fraction form
    64,281.12/88,716.78 = 38,788.80/x
  3. Step 3: Cross multiply
    64,281.12x = 88,716.78 × 38,788.80
  4. Step 4: Simplify right side
    64,281.12x = 3,441,217,436.06
  5. Step 5: Solve for x
    x = 3,441,217,436.06/64,281.12
  6. Step 6: Final answer
    x = 53,533.87

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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.