Home / 61,147.10-91,720.65-43,432.40

Finding the Fourth Proportional to 61,147.10, 91,720.65 and 43,432.40

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Solution

The fourth proportional to 61,147.10, 91,720.65 and 43,432.40 is: 65,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,147.10 : 91,720.65 = 43,432.40 : x
  2. Step 2: Convert to fraction form
    61,147.10/91,720.65 = 43,432.40/x
  3. Step 3: Cross multiply
    61,147.10x = 91,720.65 × 43,432.40
  4. Step 4: Simplify right side
    61,147.10x = 3,983,647,959.06
  5. Step 5: Solve for x
    x = 3,983,647,959.06/61,147.10
  6. Step 6: Final answer
    x = 65,148.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.