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Finding the Fourth Proportional to 89,876.98, 134,605.37 and 71,030.51

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Solution

The fourth proportional to 89,876.98, 134,605.37 and 71,030.51 is: 106,379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,876.98 : 134,605.37 = 71,030.51 : x
  2. Step 2: Convert to fraction form
    89,876.98/134,605.37 = 71,030.51/x
  3. Step 3: Cross multiply
    89,876.98x = 134,605.37 × 71,030.51
  4. Step 4: Simplify right side
    89,876.98x = 9,561,088,079.84
  5. Step 5: Solve for x
    x = 9,561,088,079.84/89,876.98
  6. Step 6: Final answer
    x = 106,379.72

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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.