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Finding the Fourth Proportional to 85,410.10, 127,769.55 and 75,042.10

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Solution

The fourth proportional to 85,410.10, 127,769.55 and 75,042.10 is: 112,259.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,410.10 : 127,769.55 = 75,042.10 : x
  2. Step 2: Convert to fraction form
    85,410.10/127,769.55 = 75,042.10/x
  3. Step 3: Cross multiply
    85,410.10x = 127,769.55 × 75,042.10
  4. Step 4: Simplify right side
    85,410.10x = 9,588,095,348.06
  5. Step 5: Solve for x
    x = 9,588,095,348.06/85,410.10
  6. Step 6: Final answer
    x = 112,259.50

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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.