Home / 80,569.51-120,854.31-30,638.08

Finding the Fourth Proportional to 80,569.51, 120,854.31 and 30,638.08

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Solution

The fourth proportional to 80,569.51, 120,854.31 and 30,638.08 is: 45,957.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,569.51 : 120,854.31 = 30,638.08 : x
  2. Step 2: Convert to fraction form
    80,569.51/120,854.31 = 30,638.08/x
  3. Step 3: Cross multiply
    80,569.51x = 120,854.31 × 30,638.08
  4. Step 4: Simplify right side
    80,569.51x = 3,702,744,018.12
  5. Step 5: Solve for x
    x = 3,702,744,018.12/80,569.51
  6. Step 6: Final answer
    x = 45,957.14

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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.