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Finding the Fourth Proportional to 40,019.66, 60,032.90 and 11,937.90

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Solution

The fourth proportional to 40,019.66, 60,032.90 and 11,937.90 is: 17,907.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,019.66 : 60,032.90 = 11,937.90 : x
  2. Step 2: Convert to fraction form
    40,019.66/60,032.90 = 11,937.90/x
  3. Step 3: Cross multiply
    40,019.66x = 60,032.90 × 11,937.90
  4. Step 4: Simplify right side
    40,019.66x = 716,666,756.91
  5. Step 5: Solve for x
    x = 716,666,756.91/40,019.66
  6. Step 6: Final answer
    x = 17,907.87

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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.