Home / 75,156.31-103,689.96-42,867.72

Finding the Fourth Proportional to 75,156.31, 103,689.96 and 42,867.72

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Solution

The fourth proportional to 75,156.31, 103,689.96 and 42,867.72 is: 59,142.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,156.31 : 103,689.96 = 42,867.72 : x
  2. Step 2: Convert to fraction form
    75,156.31/103,689.96 = 42,867.72/x
  3. Step 3: Cross multiply
    75,156.31x = 103,689.96 × 42,867.72
  4. Step 4: Simplify right side
    75,156.31x = 4,444,952,302.97
  5. Step 5: Solve for x
    x = 4,444,952,302.97/75,156.31
  6. Step 6: Final answer
    x = 59,142.77

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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.