Home / 84,280.40-126,419.73-48,719.09

Finding the Fourth Proportional to 84,280.40, 126,419.73 and 48,719.09

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Solution

The fourth proportional to 84,280.40, 126,419.73 and 48,719.09 is: 73,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,280.40 : 126,419.73 = 48,719.09 : x
  2. Step 2: Convert to fraction form
    84,280.40/126,419.73 = 48,719.09/x
  3. Step 3: Cross multiply
    84,280.40x = 126,419.73 × 48,719.09
  4. Step 4: Simplify right side
    84,280.40x = 6,159,053,625.89
  5. Step 5: Solve for x
    x = 6,159,053,625.89/84,280.40
  6. Step 6: Final answer
    x = 73,078.13

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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.