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Finding the Fourth Proportional to 47,391.68, 71,087.16 and 19,689.68

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Solution

The fourth proportional to 47,391.68, 71,087.16 and 19,689.68 is: 29,534.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,391.68 : 71,087.16 = 19,689.68 : x
  2. Step 2: Convert to fraction form
    47,391.68/71,087.16 = 19,689.68/x
  3. Step 3: Cross multiply
    47,391.68x = 71,087.16 × 19,689.68
  4. Step 4: Simplify right side
    47,391.68x = 1,399,683,432.51
  5. Step 5: Solve for x
    x = 1,399,683,432.51/47,391.68
  6. Step 6: Final answer
    x = 29,534.37

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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.