Home / 81,775.55-122,710.93-34,387.22

Finding the Fourth Proportional to 81,775.55, 122,710.93 and 34,387.22

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Solution

The fourth proportional to 81,775.55, 122,710.93 and 34,387.22 is: 51,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,775.55 : 122,710.93 = 34,387.22 : x
  2. Step 2: Convert to fraction form
    81,775.55/122,710.93 = 34,387.22/x
  3. Step 3: Cross multiply
    81,775.55x = 122,710.93 × 34,387.22
  4. Step 4: Simplify right side
    81,775.55x = 4,219,687,967.12
  5. Step 5: Solve for x
    x = 4,219,687,967.12/81,775.55
  6. Step 6: Final answer
    x = 51,600.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.