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Finding the Fourth Proportional to 66,898.90, 100,263.30 and 27,411.40

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Solution

The fourth proportional to 66,898.90, 100,263.30 and 27,411.40 is: 41,082.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,898.90 : 100,263.30 = 27,411.40 : x
  2. Step 2: Convert to fraction form
    66,898.90/100,263.30 = 27,411.40/x
  3. Step 3: Cross multiply
    66,898.90x = 100,263.30 × 27,411.40
  4. Step 4: Simplify right side
    66,898.90x = 2,748,357,421.62
  5. Step 5: Solve for x
    x = 2,748,357,421.62/66,898.90
  6. Step 6: Final answer
    x = 41,082.25

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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.