Home / 72,781.29-100,434.33-40,952.25

Finding the Fourth Proportional to 72,781.29, 100,434.33 and 40,952.25

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Solution

The fourth proportional to 72,781.29, 100,434.33 and 40,952.25 is: 56,511.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,781.29 : 100,434.33 = 40,952.25 : x
  2. Step 2: Convert to fraction form
    72,781.29/100,434.33 = 40,952.25/x
  3. Step 3: Cross multiply
    72,781.29x = 100,434.33 × 40,952.25
  4. Step 4: Simplify right side
    72,781.29x = 4,113,011,790.74
  5. Step 5: Solve for x
    x = 4,113,011,790.74/72,781.29
  6. Step 6: Final answer
    x = 56,511.94

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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.