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Finding the Fourth Proportional to 60,442.91, 90,661.59 and 21,003.11

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Solution

The fourth proportional to 60,442.91, 90,661.59 and 21,003.11 is: 31,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,442.91 : 90,661.59 = 21,003.11 : x
  2. Step 2: Convert to fraction form
    60,442.91/90,661.59 = 21,003.11/x
  3. Step 3: Cross multiply
    60,442.91x = 90,661.59 × 21,003.11
  4. Step 4: Simplify right side
    60,442.91x = 1,904,174,894.24
  5. Step 5: Solve for x
    x = 1,904,174,894.24/60,442.91
  6. Step 6: Final answer
    x = 31,503.70

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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.