Home / 83,541.30-125,312.22-21,211.80

Finding the Fourth Proportional to 83,541.30, 125,312.22 and 21,211.80

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Solution

The fourth proportional to 83,541.30, 125,312.22 and 21,211.80 is: 31,817.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,541.30 : 125,312.22 = 21,211.80 : x
  2. Step 2: Convert to fraction form
    83,541.30/125,312.22 = 21,211.80/x
  3. Step 3: Cross multiply
    83,541.30x = 125,312.22 × 21,211.80
  4. Step 4: Simplify right side
    83,541.30x = 2,658,097,748.20
  5. Step 5: Solve for x
    x = 2,658,097,748.20/83,541.30
  6. Step 6: Final answer
    x = 31,817.77

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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.