Home / 65,625.12-98,438.08-21,251.68

Finding the Fourth Proportional to 65,625.12, 98,438.08 and 21,251.68

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Solution

The fourth proportional to 65,625.12, 98,438.08 and 21,251.68 is: 31,877.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,625.12 : 98,438.08 = 21,251.68 : x
  2. Step 2: Convert to fraction form
    65,625.12/98,438.08 = 21,251.68/x
  3. Step 3: Cross multiply
    65,625.12x = 98,438.08 × 21,251.68
  4. Step 4: Simplify right side
    65,625.12x = 2,091,974,575.97
  5. Step 5: Solve for x
    x = 2,091,974,575.97/65,625.12
  6. Step 6: Final answer
    x = 31,877.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.