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Finding the Fourth Proportional to 67,409.40, 101,114.10 and 66,097.20

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Solution

The fourth proportional to 67,409.40, 101,114.10 and 66,097.20 is: 99,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,409.40 : 101,114.10 = 66,097.20 : x
  2. Step 2: Convert to fraction form
    67,409.40/101,114.10 = 66,097.20/x
  3. Step 3: Cross multiply
    67,409.40x = 101,114.10 × 66,097.20
  4. Step 4: Simplify right side
    67,409.40x = 6,683,358,890.52
  5. Step 5: Solve for x
    x = 6,683,358,890.52/67,409.40
  6. Step 6: Final answer
    x = 99,145.80

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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.