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Finding the Fourth Proportional to 49,354.76, 68,107.76 and 28,129.93

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Solution

The fourth proportional to 49,354.76, 68,107.76 and 28,129.93 is: 38,818.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,354.76 : 68,107.76 = 28,129.93 : x
  2. Step 2: Convert to fraction form
    49,354.76/68,107.76 = 28,129.93/x
  3. Step 3: Cross multiply
    49,354.76x = 68,107.76 × 28,129.93
  4. Step 4: Simplify right side
    49,354.76x = 1,915,866,521.26
  5. Step 5: Solve for x
    x = 1,915,866,521.26/49,354.76
  6. Step 6: Final answer
    x = 38,818.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.