Home / 83,288.20-124,889.10-30,670.60

Finding the Fourth Proportional to 83,288.20, 124,889.10 and 30,670.60

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Solution

The fourth proportional to 83,288.20, 124,889.10 and 30,670.60 is: 45,989.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,288.20 : 124,889.10 = 30,670.60 : x
  2. Step 2: Convert to fraction form
    83,288.20/124,889.10 = 30,670.60/x
  3. Step 3: Cross multiply
    83,288.20x = 124,889.10 × 30,670.60
  4. Step 4: Simplify right side
    83,288.20x = 3,830,423,630.46
  5. Step 5: Solve for x
    x = 3,830,423,630.46/83,288.20
  6. Step 6: Final answer
    x = 45,989.99

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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.