Home / 91,125.61-136,641.60-41,178.65

Finding the Fourth Proportional to 91,125.61, 136,641.60 and 41,178.65

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Solution

The fourth proportional to 91,125.61, 136,641.60 and 41,178.65 is: 61,746.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,125.61 : 136,641.60 = 41,178.65 : x
  2. Step 2: Convert to fraction form
    91,125.61/136,641.60 = 41,178.65/x
  3. Step 3: Cross multiply
    91,125.61x = 136,641.60 × 41,178.65
  4. Step 4: Simplify right side
    91,125.61x = 5,626,715,938.63
  5. Step 5: Solve for x
    x = 5,626,715,938.63/91,125.61
  6. Step 6: Final answer
    x = 61,746.81

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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.