Home / 89,985.48-135,023.94-54,531.42

Finding the Fourth Proportional to 89,985.48, 135,023.94 and 54,531.42

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Solution

The fourth proportional to 89,985.48, 135,023.94 and 54,531.42 is: 81,824.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,985.48 : 135,023.94 = 54,531.42 : x
  2. Step 2: Convert to fraction form
    89,985.48/135,023.94 = 54,531.42/x
  3. Step 3: Cross multiply
    89,985.48x = 135,023.94 × 54,531.42
  4. Step 4: Simplify right side
    89,985.48x = 7,363,047,182.19
  5. Step 5: Solve for x
    x = 7,363,047,182.19/89,985.48
  6. Step 6: Final answer
    x = 81,824.84

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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.