Home / 81,026.12-121,376.38-40,377.02

Finding the Fourth Proportional to 81,026.12, 121,376.38 and 40,377.02

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Solution

The fourth proportional to 81,026.12, 121,376.38 and 40,377.02 is: 60,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,026.12 : 121,376.38 = 40,377.02 : x
  2. Step 2: Convert to fraction form
    81,026.12/121,376.38 = 40,377.02/x
  3. Step 3: Cross multiply
    81,026.12x = 121,376.38 × 40,377.02
  4. Step 4: Simplify right side
    81,026.12x = 4,900,816,522.79
  5. Step 5: Solve for x
    x = 4,900,816,522.79/81,026.12
  6. Step 6: Final answer
    x = 60,484.40

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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.