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Finding the Fourth Proportional to 40,848.60, 61,272.90 and 34,287.60

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Solution

The fourth proportional to 40,848.60, 61,272.90 and 34,287.60 is: 51,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,848.60 : 61,272.90 = 34,287.60 : x
  2. Step 2: Convert to fraction form
    40,848.60/61,272.90 = 34,287.60/x
  3. Step 3: Cross multiply
    40,848.60x = 61,272.90 × 34,287.60
  4. Step 4: Simplify right side
    40,848.60x = 2,100,900,686.04
  5. Step 5: Solve for x
    x = 2,100,900,686.04/40,848.60
  6. Step 6: Final answer
    x = 51,431.40

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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.