Home / 40,215.90-60,381.45-31,460.70

Finding the Fourth Proportional to 40,215.90, 60,381.45 and 31,460.70

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Solution

The fourth proportional to 40,215.90, 60,381.45 and 31,460.70 is: 47,236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,215.90 : 60,381.45 = 31,460.70 : x
  2. Step 2: Convert to fraction form
    40,215.90/60,381.45 = 31,460.70/x
  3. Step 3: Cross multiply
    40,215.90x = 60,381.45 × 31,460.70
  4. Step 4: Simplify right side
    40,215.90x = 1,899,642,684.02
  5. Step 5: Solve for x
    x = 1,899,642,684.02/40,215.90
  6. Step 6: Final answer
    x = 47,236.11

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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.