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Finding the Fourth Proportional to 84,871.80, 127,134.90 and 43,342.20

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Solution

The fourth proportional to 84,871.80, 127,134.90 and 43,342.20 is: 64,925.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,871.80 : 127,134.90 = 43,342.20 : x
  2. Step 2: Convert to fraction form
    84,871.80/127,134.90 = 43,342.20/x
  3. Step 3: Cross multiply
    84,871.80x = 127,134.90 × 43,342.20
  4. Step 4: Simplify right side
    84,871.80x = 5,510,306,262.78
  5. Step 5: Solve for x
    x = 5,510,306,262.78/84,871.80
  6. Step 6: Final answer
    x = 64,925.05

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1.5x scale

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.