Home / 84,456.14-126,699.54-28,290.74

Finding the Fourth Proportional to 84,456.14, 126,699.54 and 28,290.74

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Solution

The fourth proportional to 84,456.14, 126,699.54 and 28,290.74 is: 42,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,456.14 : 126,699.54 = 28,290.74 : x
  2. Step 2: Convert to fraction form
    84,456.14/126,699.54 = 28,290.74/x
  3. Step 3: Cross multiply
    84,456.14x = 126,699.54 × 28,290.74
  4. Step 4: Simplify right side
    84,456.14x = 3,584,423,744.26
  5. Step 5: Solve for x
    x = 3,584,423,744.26/84,456.14
  6. Step 6: Final answer
    x = 42,441.25

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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.