Home / 78,124.12-107,817.90-44,138.83

Finding the Fourth Proportional to 78,124.12, 107,817.90 and 44,138.83

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Solution

The fourth proportional to 78,124.12, 107,817.90 and 44,138.83 is: 60,915.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,124.12 : 107,817.90 = 44,138.83 : x
  2. Step 2: Convert to fraction form
    78,124.12/107,817.90 = 44,138.83/x
  3. Step 3: Cross multiply
    78,124.12x = 107,817.90 × 44,138.83
  4. Step 4: Simplify right side
    78,124.12x = 4,758,955,959.06
  5. Step 5: Solve for x
    x = 4,758,955,959.06/78,124.12
  6. Step 6: Final answer
    x = 60,915.32

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1.5x scale

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.