Home / 45,411.47-68,120.61-12,130.79

Finding the Fourth Proportional to 45,411.47, 68,120.61 and 12,130.79

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Solution

The fourth proportional to 45,411.47, 68,120.61 and 12,130.79 is: 18,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,411.47 : 68,120.61 = 12,130.79 : x
  2. Step 2: Convert to fraction form
    45,411.47/68,120.61 = 12,130.79/x
  3. Step 3: Cross multiply
    45,411.47x = 68,120.61 × 12,130.79
  4. Step 4: Simplify right side
    45,411.47x = 826,356,753.93
  5. Step 5: Solve for x
    x = 826,356,753.93/45,411.47
  6. Step 6: Final answer
    x = 18,197.10

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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.