Home / 81,288.23-121,774.53-59,902.10

Finding the Fourth Proportional to 81,288.23, 121,774.53 and 59,902.10

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Solution

The fourth proportional to 81,288.23, 121,774.53 and 59,902.10 is: 89,736.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,288.23 : 121,774.53 = 59,902.10 : x
  2. Step 2: Convert to fraction form
    81,288.23/121,774.53 = 59,902.10/x
  3. Step 3: Cross multiply
    81,288.23x = 121,774.53 × 59,902.10
  4. Step 4: Simplify right side
    81,288.23x = 7,294,549,464.64
  5. Step 5: Solve for x
    x = 7,294,549,464.64/81,288.23
  6. Step 6: Final answer
    x = 89,736.85

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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.