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Finding the Fourth Proportional to 85,047.79, 127,572.90 and 29,643.79

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Solution

The fourth proportional to 85,047.79, 127,572.90 and 29,643.79 is: 44,466.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,047.79 : 127,572.90 = 29,643.79 : x
  2. Step 2: Convert to fraction form
    85,047.79/127,572.90 = 29,643.79/x
  3. Step 3: Cross multiply
    85,047.79x = 127,572.90 × 29,643.79
  4. Step 4: Simplify right side
    85,047.79x = 3,781,744,257.29
  5. Step 5: Solve for x
    x = 3,781,744,257.29/85,047.79
  6. Step 6: Final answer
    x = 44,466.11

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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.