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Finding the Fourth Proportional to 100,062.72, 150,005.76 and 37,689.60

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Solution

The fourth proportional to 100,062.72, 150,005.76 and 37,689.60 is: 56,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,062.72 : 150,005.76 = 37,689.60 : x
  2. Step 2: Convert to fraction form
    100,062.72/150,005.76 = 37,689.60/x
  3. Step 3: Cross multiply
    100,062.72x = 150,005.76 × 37,689.60
  4. Step 4: Simplify right side
    100,062.72x = 5,653,657,092.10
  5. Step 5: Solve for x
    x = 5,653,657,092.10/100,062.72
  6. Step 6: Final answer
    x = 56,501.13

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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.