Home / 91,038.78-136,577.66-31,876.38

Finding the Fourth Proportional to 91,038.78, 136,577.66 and 31,876.38

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Solution

The fourth proportional to 91,038.78, 136,577.66 and 31,876.38 is: 47,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,038.78 : 136,577.66 = 31,876.38 : x
  2. Step 2: Convert to fraction form
    91,038.78/136,577.66 = 31,876.38/x
  3. Step 3: Cross multiply
    91,038.78x = 136,577.66 × 31,876.38
  4. Step 4: Simplify right side
    91,038.78x = 4,353,601,230.29
  5. Step 5: Solve for x
    x = 4,353,601,230.29/91,038.78
  6. Step 6: Final answer
    x = 47,821.39

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1.5x scale

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.