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Finding the Fourth Proportional to 90,546.24, 124,866.72 and 70,374

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Solution

The fourth proportional to 90,546.24, 124,866.72 and 70,374 is: 97,048.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,546.24 : 124,866.72 = 70,374 : x
  2. Step 2: Convert to fraction form
    90,546.24/124,866.72 = 70,374/x
  3. Step 3: Cross multiply
    90,546.24x = 124,866.72 × 70,374
  4. Step 4: Simplify right side
    90,546.24x = 8,787,370,553.28
  5. Step 5: Solve for x
    x = 8,787,370,553.28/90,546.24
  6. Step 6: Final answer
    x = 97,048.43

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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.