Home / 84,275.40-126,398.52-31,685.34

Finding the Fourth Proportional to 84,275.40, 126,398.52 and 31,685.34

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Solution

The fourth proportional to 84,275.40, 126,398.52 and 31,685.34 is: 47,522.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,275.40 : 126,398.52 = 31,685.34 : x
  2. Step 2: Convert to fraction form
    84,275.40/126,398.52 = 31,685.34/x
  3. Step 3: Cross multiply
    84,275.40x = 126,398.52 × 31,685.34
  4. Step 4: Simplify right side
    84,275.40x = 4,004,980,081.70
  5. Step 5: Solve for x
    x = 4,004,980,081.70/84,275.40
  6. Step 6: Final answer
    x = 47,522.53

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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.