Home / 53,178.60-73,385.01-28,979.04

Finding the Fourth Proportional to 53,178.60, 73,385.01 and 28,979.04

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Solution

The fourth proportional to 53,178.60, 73,385.01 and 28,979.04 is: 39,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,178.60 : 73,385.01 = 28,979.04 : x
  2. Step 2: Convert to fraction form
    53,178.60/73,385.01 = 28,979.04/x
  3. Step 3: Cross multiply
    53,178.60x = 73,385.01 × 28,979.04
  4. Step 4: Simplify right side
    53,178.60x = 2,126,627,140.19
  5. Step 5: Solve for x
    x = 2,126,627,140.19/53,178.60
  6. Step 6: Final answer
    x = 39,990.28

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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.