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Finding the Fourth Proportional to 59,088, 81,611.52 and 40,193.28

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Solution

The fourth proportional to 59,088, 81,611.52 and 40,193.28 is: 55,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,088 : 81,611.52 = 40,193.28 : x
  2. Step 2: Convert to fraction form
    59,088/81,611.52 = 40,193.28/x
  3. Step 3: Cross multiply
    59,088x = 81,611.52 × 40,193.28
  4. Step 4: Simplify right side
    59,088x = 3,280,234,674.59
  5. Step 5: Solve for x
    x = 3,280,234,674.59/59,088
  6. Step 6: Final answer
    x = 55,514.40

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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.