Home / 91,117.76-136,676.05-31,117.29

Finding the Fourth Proportional to 91,117.76, 136,676.05 and 31,117.29

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Solution

The fourth proportional to 91,117.76, 136,676.05 and 31,117.29 is: 46,675.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,117.76 : 136,676.05 = 31,117.29 : x
  2. Step 2: Convert to fraction form
    91,117.76/136,676.05 = 31,117.29/x
  3. Step 3: Cross multiply
    91,117.76x = 136,676.05 × 31,117.29
  4. Step 4: Simplify right side
    91,117.76x = 4,252,988,283.90
  5. Step 5: Solve for x
    x = 4,252,988,283.90/91,117.76
  6. Step 6: Final answer
    x = 46,675.74

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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.