Home / 83,000.79-124,626.60-66,311.28

Finding the Fourth Proportional to 83,000.79, 124,626.60 and 66,311.28

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Solution

The fourth proportional to 83,000.79, 124,626.60 and 66,311.28 is: 99,567.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,000.79 : 124,626.60 = 66,311.28 : x
  2. Step 2: Convert to fraction form
    83,000.79/124,626.60 = 66,311.28/x
  3. Step 3: Cross multiply
    83,000.79x = 124,626.60 × 66,311.28
  4. Step 4: Simplify right side
    83,000.79x = 8,264,149,368.05
  5. Step 5: Solve for x
    x = 8,264,149,368.05/83,000.79
  6. Step 6: Final answer
    x = 99,567.12

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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.