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Finding the Fourth Proportional to 81,357.01, 112,253.34 and 47,344.91

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Solution

The fourth proportional to 81,357.01, 112,253.34 and 47,344.91 is: 65,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,357.01 : 112,253.34 = 47,344.91 : x
  2. Step 2: Convert to fraction form
    81,357.01/112,253.34 = 47,344.91/x
  3. Step 3: Cross multiply
    81,357.01x = 112,253.34 × 47,344.91
  4. Step 4: Simplify right side
    81,357.01x = 5,314,623,895.78
  5. Step 5: Solve for x
    x = 5,314,623,895.78/81,357.01
  6. Step 6: Final answer
    x = 65,324.72

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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.