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Finding the Fourth Proportional to 67,088, 92,557.84 and 40,239.20

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Solution

The fourth proportional to 67,088, 92,557.84 and 40,239.20 is: 55,515.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,088 : 92,557.84 = 40,239.20 : x
  2. Step 2: Convert to fraction form
    67,088/92,557.84 = 40,239.20/x
  3. Step 3: Cross multiply
    67,088x = 92,557.84 × 40,239.20
  4. Step 4: Simplify right side
    67,088x = 3,724,453,435.33
  5. Step 5: Solve for x
    x = 3,724,453,435.33/67,088
  6. Step 6: Final answer
    x = 55,515.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.