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Finding the Fourth Proportional to 64,397.60, 96,661.20 and 31,144.40

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Solution

The fourth proportional to 64,397.60, 96,661.20 and 31,144.40 is: 46,747.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,397.60 : 96,661.20 = 31,144.40 : x
  2. Step 2: Convert to fraction form
    64,397.60/96,661.20 = 31,144.40/x
  3. Step 3: Cross multiply
    64,397.60x = 96,661.20 × 31,144.40
  4. Step 4: Simplify right side
    64,397.60x = 3,010,455,077.28
  5. Step 5: Solve for x
    x = 3,010,455,077.28/64,397.60
  6. Step 6: Final answer
    x = 46,747.94

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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.