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Finding the Fourth Proportional to 61,154.92, 91,740.88 and 21,702.65

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Solution

The fourth proportional to 61,154.92, 91,740.88 and 21,702.65 is: 32,556.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,154.92 : 91,740.88 = 21,702.65 : x
  2. Step 2: Convert to fraction form
    61,154.92/91,740.88 = 21,702.65/x
  3. Step 3: Cross multiply
    61,154.92x = 91,740.88 × 21,702.65
  4. Step 4: Simplify right side
    61,154.92x = 1,991,020,209.33
  5. Step 5: Solve for x
    x = 1,991,020,209.33/61,154.92
  6. Step 6: Final answer
    x = 32,556.99

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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.