Home / 78,152.85-107,850.08-42,340.73

Finding the Fourth Proportional to 78,152.85, 107,850.08 and 42,340.73

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Solution

The fourth proportional to 78,152.85, 107,850.08 and 42,340.73 is: 58,429.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,152.85 : 107,850.08 = 42,340.73 : x
  2. Step 2: Convert to fraction form
    78,152.85/107,850.08 = 42,340.73/x
  3. Step 3: Cross multiply
    78,152.85x = 107,850.08 × 42,340.73
  4. Step 4: Simplify right side
    78,152.85x = 4,566,450,684.36
  5. Step 5: Solve for x
    x = 4,566,450,684.36/78,152.85
  6. Step 6: Final answer
    x = 58,429.74

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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.