Home / 61,155.16-84,358.32-38,458.20

Finding the Fourth Proportional to 61,155.16, 84,358.32 and 38,458.20

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Solution

The fourth proportional to 61,155.16, 84,358.32 and 38,458.20 is: 53,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,155.16 : 84,358.32 = 38,458.20 : x
  2. Step 2: Convert to fraction form
    61,155.16/84,358.32 = 38,458.20/x
  3. Step 3: Cross multiply
    61,155.16x = 84,358.32 × 38,458.20
  4. Step 4: Simplify right side
    61,155.16x = 3,244,269,142.22
  5. Step 5: Solve for x
    x = 3,244,269,142.22/61,155.16
  6. Step 6: Final answer
    x = 53,049.80

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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.