Home / 81,580.34-112,581.18-47,612.29

Finding the Fourth Proportional to 81,580.34, 112,581.18 and 47,612.29

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Solution

The fourth proportional to 81,580.34, 112,581.18 and 47,612.29 is: 65,705.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,580.34 : 112,581.18 = 47,612.29 : x
  2. Step 2: Convert to fraction form
    81,580.34/112,581.18 = 47,612.29/x
  3. Step 3: Cross multiply
    81,580.34x = 112,581.18 × 47,612.29
  4. Step 4: Simplify right side
    81,580.34x = 5,360,247,790.70
  5. Step 5: Solve for x
    x = 5,360,247,790.70/81,580.34
  6. Step 6: Final answer
    x = 65,705.14

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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.