Home / 77,859.12-107,445.58-42,049.13

Finding the Fourth Proportional to 77,859.12, 107,445.58 and 42,049.13

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Solution

The fourth proportional to 77,859.12, 107,445.58 and 42,049.13 is: 58,027.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,859.12 : 107,445.58 = 42,049.13 : x
  2. Step 2: Convert to fraction form
    77,859.12/107,445.58 = 42,049.13/x
  3. Step 3: Cross multiply
    77,859.12x = 107,445.58 × 42,049.13
  4. Step 4: Simplify right side
    77,859.12x = 4,517,993,324.84
  5. Step 5: Solve for x
    x = 4,517,993,324.84/77,859.12
  6. Step 6: Final answer
    x = 58,027.80

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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.