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Finding the Fourth Proportional to 86,912.28, 119,938.92 and 47,168.28

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Solution

The fourth proportional to 86,912.28, 119,938.92 and 47,168.28 is: 65,092.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,912.28 : 119,938.92 = 47,168.28 : x
  2. Step 2: Convert to fraction form
    86,912.28/119,938.92 = 47,168.28/x
  3. Step 3: Cross multiply
    86,912.28x = 119,938.92 × 47,168.28
  4. Step 4: Simplify right side
    86,912.28x = 5,657,312,561.46
  5. Step 5: Solve for x
    x = 5,657,312,561.46/86,912.28
  6. Step 6: Final answer
    x = 65,092.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.