Home / 49,743.12-74,541.72-28,689.60

Finding the Fourth Proportional to 49,743.12, 74,541.72 and 28,689.60

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Solution

The fourth proportional to 49,743.12, 74,541.72 and 28,689.60 is: 42,992.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,743.12 : 74,541.72 = 28,689.60 : x
  2. Step 2: Convert to fraction form
    49,743.12/74,541.72 = 28,689.60/x
  3. Step 3: Cross multiply
    49,743.12x = 74,541.72 × 28,689.60
  4. Step 4: Simplify right side
    49,743.12x = 2,138,572,130.11
  5. Step 5: Solve for x
    x = 2,138,572,130.11/49,743.12
  6. Step 6: Final answer
    x = 42,992.32

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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.