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Finding the Fourth Proportional to 67,390.40, 101,085.60 and 41,146.40

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Solution

The fourth proportional to 67,390.40, 101,085.60 and 41,146.40 is: 61,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.40 : 101,085.60 = 41,146.40 : x
  2. Step 2: Convert to fraction form
    67,390.40/101,085.60 = 41,146.40/x
  3. Step 3: Cross multiply
    67,390.40x = 101,085.60 × 41,146.40
  4. Step 4: Simplify right side
    67,390.40x = 4,159,308,531.84
  5. Step 5: Solve for x
    x = 4,159,308,531.84/67,390.40
  6. Step 6: Final answer
    x = 61,719.60

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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.