Home / 89,890.61-134,707.40-66,010.80

Finding the Fourth Proportional to 89,890.61, 134,707.40 and 66,010.80

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Solution

The fourth proportional to 89,890.61, 134,707.40 and 66,010.80 is: 98,921.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,890.61 : 134,707.40 = 66,010.80 : x
  2. Step 2: Convert to fraction form
    89,890.61/134,707.40 = 66,010.80/x
  3. Step 3: Cross multiply
    89,890.61x = 134,707.40 × 66,010.80
  4. Step 4: Simplify right side
    89,890.61x = 8,892,143,276.14
  5. Step 5: Solve for x
    x = 8,892,143,276.14/89,890.61
  6. Step 6: Final answer
    x = 98,921.83

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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.