Home / 81,363.04-112,333.22-55,861.20

Finding the Fourth Proportional to 81,363.04, 112,333.22 and 55,861.20

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Solution

The fourth proportional to 81,363.04, 112,333.22 and 55,861.20 is: 77,124.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,363.04 : 112,333.22 = 55,861.20 : x
  2. Step 2: Convert to fraction form
    81,363.04/112,333.22 = 55,861.20/x
  3. Step 3: Cross multiply
    81,363.04x = 112,333.22 × 55,861.20
  4. Step 4: Simplify right side
    81,363.04x = 6,275,068,469.06
  5. Step 5: Solve for x
    x = 6,275,068,469.06/81,363.04
  6. Step 6: Final answer
    x = 77,124.31

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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.