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Finding the Fourth Proportional to 85,506.79, 127,634.02 and 75,406.70

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Solution

The fourth proportional to 85,506.79, 127,634.02 and 75,406.70 is: 112,557.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,506.79 : 127,634.02 = 75,406.70 : x
  2. Step 2: Convert to fraction form
    85,506.79/127,634.02 = 75,406.70/x
  3. Step 3: Cross multiply
    85,506.79x = 127,634.02 × 75,406.70
  4. Step 4: Simplify right side
    85,506.79x = 9,624,460,255.93
  5. Step 5: Solve for x
    x = 9,624,460,255.93/85,506.79
  6. Step 6: Final answer
    x = 112,557.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.