Home / 81,430.68-112,372.38-45,622.20

Finding the Fourth Proportional to 81,430.68, 112,372.38 and 45,622.20

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Solution

The fourth proportional to 81,430.68, 112,372.38 and 45,622.20 is: 62,957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,430.68 : 112,372.38 = 45,622.20 : x
  2. Step 2: Convert to fraction form
    81,430.68/112,372.38 = 45,622.20/x
  3. Step 3: Cross multiply
    81,430.68x = 112,372.38 × 45,622.20
  4. Step 4: Simplify right side
    81,430.68x = 5,126,675,194.84
  5. Step 5: Solve for x
    x = 5,126,675,194.84/81,430.68
  6. Step 6: Final answer
    x = 62,957.54

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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.