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Finding the Fourth Proportional to 84,312.40, 126,475.80 and 25,144.24

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Solution

The fourth proportional to 84,312.40, 126,475.80 and 25,144.24 is: 37,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,312.40 : 126,475.80 = 25,144.24 : x
  2. Step 2: Convert to fraction form
    84,312.40/126,475.80 = 25,144.24/x
  3. Step 3: Cross multiply
    84,312.40x = 126,475.80 × 25,144.24
  4. Step 4: Simplify right side
    84,312.40x = 3,180,137,869.39
  5. Step 5: Solve for x
    x = 3,180,137,869.39/84,312.40
  6. Step 6: Final answer
    x = 37,718.51

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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.