Home / 53,178.50-73,385.39-28,979.68

Finding the Fourth Proportional to 53,178.50, 73,385.39 and 28,979.68

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Solution

The fourth proportional to 53,178.50, 73,385.39 and 28,979.68 is: 39,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,178.50 : 73,385.39 = 28,979.68 : x
  2. Step 2: Convert to fraction form
    53,178.50/73,385.39 = 28,979.68/x
  3. Step 3: Cross multiply
    53,178.50x = 73,385.39 × 28,979.68
  4. Step 4: Simplify right side
    53,178.50x = 2,126,685,302.34
  5. Step 5: Solve for x
    x = 2,126,685,302.34/53,178.50
  6. Step 6: Final answer
    x = 39,991.45

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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.