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Finding the Fourth Proportional to 60,123.36, 90,139.50 and 36,426

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Solution

The fourth proportional to 60,123.36, 90,139.50 and 36,426 is: 54,611.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,123.36 : 90,139.50 = 36,426 : x
  2. Step 2: Convert to fraction form
    60,123.36/90,139.50 = 36,426/x
  3. Step 3: Cross multiply
    60,123.36x = 90,139.50 × 36,426
  4. Step 4: Simplify right side
    60,123.36x = 3,283,421,427
  5. Step 5: Solve for x
    x = 3,283,421,427/60,123.36
  6. Step 6: Final answer
    x = 54,611.41

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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.