Home / 81,534.15-122,534.50-40,010.31

Finding the Fourth Proportional to 81,534.15, 122,534.50 and 40,010.31

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Solution

The fourth proportional to 81,534.15, 122,534.50 and 40,010.31 is: 60,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,534.15 : 122,534.50 = 40,010.31 : x
  2. Step 2: Convert to fraction form
    81,534.15/122,534.50 = 40,010.31/x
  3. Step 3: Cross multiply
    81,534.15x = 122,534.50 × 40,010.31
  4. Step 4: Simplify right side
    81,534.15x = 4,902,642,618.00
  5. Step 5: Solve for x
    x = 4,902,642,618.00/81,534.15
  6. Step 6: Final answer
    x = 60,129.93

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1.5x scale

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.