Home / 72,521.79-108,681.51-39,170.04

Finding the Fourth Proportional to 72,521.79, 108,681.51 and 39,170.04

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Solution

The fourth proportional to 72,521.79, 108,681.51 and 39,170.04 is: 58,700.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,521.79 : 108,681.51 = 39,170.04 : x
  2. Step 2: Convert to fraction form
    72,521.79/108,681.51 = 39,170.04/x
  3. Step 3: Cross multiply
    72,521.79x = 108,681.51 × 39,170.04
  4. Step 4: Simplify right side
    72,521.79x = 4,257,059,093.96
  5. Step 5: Solve for x
    x = 4,257,059,093.96/72,521.79
  6. Step 6: Final answer
    x = 58,700.41

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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.