Home / 84,530.80-126,820.20-42,360.04

Finding the Fourth Proportional to 84,530.80, 126,820.20 and 42,360.04

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Solution

The fourth proportional to 84,530.80, 126,820.20 and 42,360.04 is: 63,552.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,530.80 : 126,820.20 = 42,360.04 : x
  2. Step 2: Convert to fraction form
    84,530.80/126,820.20 = 42,360.04/x
  3. Step 3: Cross multiply
    84,530.80x = 126,820.20 × 42,360.04
  4. Step 4: Simplify right side
    84,530.80x = 5,372,108,744.81
  5. Step 5: Solve for x
    x = 5,372,108,744.81/84,530.80
  6. Step 6: Final answer
    x = 63,552.09

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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.