Home / 78,029.91-107,680.50-42,219.14

Finding the Fourth Proportional to 78,029.91, 107,680.50 and 42,219.14

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Solution

The fourth proportional to 78,029.91, 107,680.50 and 42,219.14 is: 58,261.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029.91 : 107,680.50 = 42,219.14 : x
  2. Step 2: Convert to fraction form
    78,029.91/107,680.50 = 42,219.14/x
  3. Step 3: Cross multiply
    78,029.91x = 107,680.50 × 42,219.14
  4. Step 4: Simplify right side
    78,029.91x = 4,546,177,566.37
  5. Step 5: Solve for x
    x = 4,546,177,566.37/78,029.91
  6. Step 6: Final answer
    x = 58,261.99

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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.