Home / 80,929.16-121,445.58-39,353.48

Finding the Fourth Proportional to 80,929.16, 121,445.58 and 39,353.48

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Solution

The fourth proportional to 80,929.16, 121,445.58 and 39,353.48 is: 59,055.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,929.16 : 121,445.58 = 39,353.48 : x
  2. Step 2: Convert to fraction form
    80,929.16/121,445.58 = 39,353.48/x
  3. Step 3: Cross multiply
    80,929.16x = 121,445.58 × 39,353.48
  4. Step 4: Simplify right side
    80,929.16x = 4,779,306,203.62
  5. Step 5: Solve for x
    x = 4,779,306,203.62/80,929.16
  6. Step 6: Final answer
    x = 59,055.43

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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.