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Finding the Fourth Proportional to 85,557, 128,335.02 and 23,227.50

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Solution

The fourth proportional to 85,557, 128,335.02 and 23,227.50 is: 34,841.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,557 : 128,335.02 = 23,227.50 : x
  2. Step 2: Convert to fraction form
    85,557/128,335.02 = 23,227.50/x
  3. Step 3: Cross multiply
    85,557x = 128,335.02 × 23,227.50
  4. Step 4: Simplify right side
    85,557x = 2,980,901,677.05
  5. Step 5: Solve for x
    x = 2,980,901,677.05/85,557
  6. Step 6: Final answer
    x = 34,841.12

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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.