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Finding the Fourth Proportional to 84,886.70, 127,387.65 and 55,232.30

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Solution

The fourth proportional to 84,886.70, 127,387.65 and 55,232.30 is: 82,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,886.70 : 127,387.65 = 55,232.30 : x
  2. Step 2: Convert to fraction form
    84,886.70/127,387.65 = 55,232.30/x
  3. Step 3: Cross multiply
    84,886.70x = 127,387.65 × 55,232.30
  4. Step 4: Simplify right side
    84,886.70x = 7,035,912,901.10
  5. Step 5: Solve for x
    x = 7,035,912,901.10/84,886.70
  6. Step 6: Final answer
    x = 82,885.93

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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.