Home / 39,531-54,565.74-28,385.40

Finding the Fourth Proportional to 39,531, 54,565.74 and 28,385.40

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Solution

The fourth proportional to 39,531, 54,565.74 and 28,385.40 is: 39,181.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,531 : 54,565.74 = 28,385.40 : x
  2. Step 2: Convert to fraction form
    39,531/54,565.74 = 28,385.40/x
  3. Step 3: Cross multiply
    39,531x = 54,565.74 × 28,385.40
  4. Step 4: Simplify right side
    39,531x = 1,548,870,356.20
  5. Step 5: Solve for x
    x = 1,548,870,356.20/39,531
  6. Step 6: Final answer
    x = 39,181.16

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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.