Home / 65,690.28-98,509.86-21,306.30

Finding the Fourth Proportional to 65,690.28, 98,509.86 and 21,306.30

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Solution

The fourth proportional to 65,690.28, 98,509.86 and 21,306.30 is: 31,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,690.28 : 98,509.86 = 21,306.30 : x
  2. Step 2: Convert to fraction form
    65,690.28/98,509.86 = 21,306.30/x
  3. Step 3: Cross multiply
    65,690.28x = 98,509.86 × 21,306.30
  4. Step 4: Simplify right side
    65,690.28x = 2,098,880,630.12
  5. Step 5: Solve for x
    x = 2,098,880,630.12/65,690.28
  6. Step 6: Final answer
    x = 31,951.16

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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.