Home / 77,936.86-107,552.80-42,126.87

Finding the Fourth Proportional to 77,936.86, 107,552.80 and 42,126.87

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Solution

The fourth proportional to 77,936.86, 107,552.80 and 42,126.87 is: 58,135.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,936.86 : 107,552.80 = 42,126.87 : x
  2. Step 2: Convert to fraction form
    77,936.86/107,552.80 = 42,126.87/x
  3. Step 3: Cross multiply
    77,936.86x = 107,552.80 × 42,126.87
  4. Step 4: Simplify right side
    77,936.86x = 4,530,862,823.74
  5. Step 5: Solve for x
    x = 4,530,862,823.74/77,936.86
  6. Step 6: Final answer
    x = 58,135.04

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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.