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Finding the Fourth Proportional to 69,087.85, 103,631.40 and 59,699.32

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Solution

The fourth proportional to 69,087.85, 103,631.40 and 59,699.32 is: 89,548.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,087.85 : 103,631.40 = 59,699.32 : x
  2. Step 2: Convert to fraction form
    69,087.85/103,631.40 = 59,699.32/x
  3. Step 3: Cross multiply
    69,087.85x = 103,631.40 × 59,699.32
  4. Step 4: Simplify right side
    69,087.85x = 6,186,723,851.57
  5. Step 5: Solve for x
    x = 6,186,723,851.57/69,087.85
  6. Step 6: Final answer
    x = 89,548.66

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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.