Home / 77,859.15-107,445.60-42,049.16

Finding the Fourth Proportional to 77,859.15, 107,445.60 and 42,049.16

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Solution

The fourth proportional to 77,859.15, 107,445.60 and 42,049.16 is: 58,027.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,859.15 : 107,445.60 = 42,049.16 : x
  2. Step 2: Convert to fraction form
    77,859.15/107,445.60 = 42,049.16/x
  3. Step 3: Cross multiply
    77,859.15x = 107,445.60 × 42,049.16
  4. Step 4: Simplify right side
    77,859.15x = 4,517,996,688.47
  5. Step 5: Solve for x
    x = 4,517,996,688.47/77,859.15
  6. Step 6: Final answer
    x = 58,027.82

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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.