Home / 91,088.90-136,648.92-31,114.08

Finding the Fourth Proportional to 91,088.90, 136,648.92 and 31,114.08

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Solution

The fourth proportional to 91,088.90, 136,648.92 and 31,114.08 is: 46,676.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,088.90 : 136,648.92 = 31,114.08 : x
  2. Step 2: Convert to fraction form
    91,088.90/136,648.92 = 31,114.08/x
  3. Step 3: Cross multiply
    91,088.90x = 136,648.92 × 31,114.08
  4. Step 4: Simplify right side
    91,088.90x = 4,251,705,428.79
  5. Step 5: Solve for x
    x = 4,251,705,428.79/91,088.90
  6. Step 6: Final answer
    x = 46,676.44

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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.