Home / 78,156.83-117,139.06-44,451.13

Finding the Fourth Proportional to 78,156.83, 117,139.06 and 44,451.13

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Solution

The fourth proportional to 78,156.83, 117,139.06 and 44,451.13 is: 66,621.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,156.83 : 117,139.06 = 44,451.13 : x
  2. Step 2: Convert to fraction form
    78,156.83/117,139.06 = 44,451.13/x
  3. Step 3: Cross multiply
    78,156.83x = 117,139.06 × 44,451.13
  4. Step 4: Simplify right side
    78,156.83x = 5,206,963,584.14
  5. Step 5: Solve for x
    x = 5,206,963,584.14/78,156.83
  6. Step 6: Final answer
    x = 66,621.99

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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.