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Finding the Fourth Proportional to 83,798.90, 125,739.30 and 39,430.04

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Solution

The fourth proportional to 83,798.90, 125,739.30 and 39,430.04 is: 59,164.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,798.90 : 125,739.30 = 39,430.04 : x
  2. Step 2: Convert to fraction form
    83,798.90/125,739.30 = 39,430.04/x
  3. Step 3: Cross multiply
    83,798.90x = 125,739.30 × 39,430.04
  4. Step 4: Simplify right side
    83,798.90x = 4,957,905,628.57
  5. Step 5: Solve for x
    x = 4,957,905,628.57/83,798.90
  6. Step 6: Final answer
    x = 59,164.33

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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.