Home / 39,975.76-55,165.10-22,070.38

Finding the Fourth Proportional to 39,975.76, 55,165.10 and 22,070.38

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Solution

The fourth proportional to 39,975.76, 55,165.10 and 22,070.38 is: 30,456.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,975.76 : 55,165.10 = 22,070.38 : x
  2. Step 2: Convert to fraction form
    39,975.76/55,165.10 = 22,070.38/x
  3. Step 3: Cross multiply
    39,975.76x = 55,165.10 × 22,070.38
  4. Step 4: Simplify right side
    39,975.76x = 1,217,514,719.74
  5. Step 5: Solve for x
    x = 1,217,514,719.74/39,975.76
  6. Step 6: Final answer
    x = 30,456.32

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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.