Home / 80,830.64-121,265.40-25,426.64

Finding the Fourth Proportional to 80,830.64, 121,265.40 and 25,426.64

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Solution

The fourth proportional to 80,830.64, 121,265.40 and 25,426.64 is: 38,146.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,830.64 : 121,265.40 = 25,426.64 : x
  2. Step 2: Convert to fraction form
    80,830.64/121,265.40 = 25,426.64/x
  3. Step 3: Cross multiply
    80,830.64x = 121,265.40 × 25,426.64
  4. Step 4: Simplify right side
    80,830.64x = 3,083,371,670.26
  5. Step 5: Solve for x
    x = 3,083,371,670.26/80,830.64
  6. Step 6: Final answer
    x = 38,146.08

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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.