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Finding the Fourth Proportional to 66,430.40, 99,702.30 and 27,015.80

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Solution

The fourth proportional to 66,430.40, 99,702.30 and 27,015.80 is: 40,546.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.40 : 99,702.30 = 27,015.80 : x
  2. Step 2: Convert to fraction form
    66,430.40/99,702.30 = 27,015.80/x
  3. Step 3: Cross multiply
    66,430.40x = 99,702.30 × 27,015.80
  4. Step 4: Simplify right side
    66,430.40x = 2,693,537,396.34
  5. Step 5: Solve for x
    x = 2,693,537,396.34/66,430.40
  6. Step 6: Final answer
    x = 40,546.76

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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.