Home / 39,417.72-54,416.52-30,445.08

Finding the Fourth Proportional to 39,417.72, 54,416.52 and 30,445.08

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Solution

The fourth proportional to 39,417.72, 54,416.52 and 30,445.08 is: 42,029.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.72 : 54,416.52 = 30,445.08 : x
  2. Step 2: Convert to fraction form
    39,417.72/54,416.52 = 30,445.08/x
  3. Step 3: Cross multiply
    39,417.72x = 54,416.52 × 30,445.08
  4. Step 4: Simplify right side
    39,417.72x = 1,656,715,304.72
  5. Step 5: Solve for x
    x = 1,656,715,304.72/39,417.72
  6. Step 6: Final answer
    x = 42,029.71

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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.