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Finding the Fourth Proportional to 90,384.80, 124,712.76 and 54,576.32

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Solution

The fourth proportional to 90,384.80, 124,712.76 and 54,576.32 is: 75,304.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,384.80 : 124,712.76 = 54,576.32 : x
  2. Step 2: Convert to fraction form
    90,384.80/124,712.76 = 54,576.32/x
  3. Step 3: Cross multiply
    90,384.80x = 124,712.76 × 54,576.32
  4. Step 4: Simplify right side
    90,384.80x = 6,806,363,497.84
  5. Step 5: Solve for x
    x = 6,806,363,497.84/90,384.80
  6. Step 6: Final answer
    x = 75,304.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.