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Finding the Fourth Proportional to 49,345.60, 74,097.60 and 45,707.20

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Solution

The fourth proportional to 49,345.60, 74,097.60 and 45,707.20 is: 68,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,345.60 : 74,097.60 = 45,707.20 : x
  2. Step 2: Convert to fraction form
    49,345.60/74,097.60 = 45,707.20/x
  3. Step 3: Cross multiply
    49,345.60x = 74,097.60 × 45,707.20
  4. Step 4: Simplify right side
    49,345.60x = 3,386,793,822.72
  5. Step 5: Solve for x
    x = 3,386,793,822.72/49,345.60
  6. Step 6: Final answer
    x = 68,634.16

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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.