Home / 81,280.59-121,827.33-31,335.72

Finding the Fourth Proportional to 81,280.59, 121,827.33 and 31,335.72

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Solution

The fourth proportional to 81,280.59, 121,827.33 and 31,335.72 is: 46,967.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,280.59 : 121,827.33 = 31,335.72 : x
  2. Step 2: Convert to fraction form
    81,280.59/121,827.33 = 31,335.72/x
  3. Step 3: Cross multiply
    81,280.59x = 121,827.33 × 31,335.72
  4. Step 4: Simplify right side
    81,280.59x = 3,817,547,101.23
  5. Step 5: Solve for x
    x = 3,817,547,101.23/81,280.59
  6. Step 6: Final answer
    x = 46,967.51

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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.