Home / 77,399.78-106,816.02-58,245.12

Finding the Fourth Proportional to 77,399.78, 106,816.02 and 58,245.12

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Solution

The fourth proportional to 77,399.78, 106,816.02 and 58,245.12 is: 80,381.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,399.78 : 106,816.02 = 58,245.12 : x
  2. Step 2: Convert to fraction form
    77,399.78/106,816.02 = 58,245.12/x
  3. Step 3: Cross multiply
    77,399.78x = 106,816.02 × 58,245.12
  4. Step 4: Simplify right side
    77,399.78x = 6,221,511,902.82
  5. Step 5: Solve for x
    x = 6,221,511,902.82/77,399.78
  6. Step 6: Final answer
    x = 80,381.52

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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.