Home / 81,024.20-121,536.30-53,030.60

Finding the Fourth Proportional to 81,024.20, 121,536.30 and 53,030.60

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Solution

The fourth proportional to 81,024.20, 121,536.30 and 53,030.60 is: 79,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,024.20 : 121,536.30 = 53,030.60 : x
  2. Step 2: Convert to fraction form
    81,024.20/121,536.30 = 53,030.60/x
  3. Step 3: Cross multiply
    81,024.20x = 121,536.30 × 53,030.60
  4. Step 4: Simplify right side
    81,024.20x = 6,445,142,910.78
  5. Step 5: Solve for x
    x = 6,445,142,910.78/81,024.20
  6. Step 6: Final answer
    x = 79,545.90

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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.