Home / 80,938.18-121,410.90-30,349.18

Finding the Fourth Proportional to 80,938.18, 121,410.90 and 30,349.18

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Solution

The fourth proportional to 80,938.18, 121,410.90 and 30,349.18 is: 45,525.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938.18 : 121,410.90 = 30,349.18 : x
  2. Step 2: Convert to fraction form
    80,938.18/121,410.90 = 30,349.18/x
  3. Step 3: Cross multiply
    80,938.18x = 121,410.90 × 30,349.18
  4. Step 4: Simplify right side
    80,938.18x = 3,684,721,258.06
  5. Step 5: Solve for x
    x = 3,684,721,258.06/80,938.18
  6. Step 6: Final answer
    x = 45,525.13

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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.