Home / 91,129.60-136,688.33-43,778.62

Finding the Fourth Proportional to 91,129.60, 136,688.33 and 43,778.62

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Solution

The fourth proportional to 91,129.60, 136,688.33 and 43,778.62 is: 65,665.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,129.60 : 136,688.33 = 43,778.62 : x
  2. Step 2: Convert to fraction form
    91,129.60/136,688.33 = 43,778.62/x
  3. Step 3: Cross multiply
    91,129.60x = 136,688.33 × 43,778.62
  4. Step 4: Simplify right side
    91,129.60x = 5,984,026,491.56
  5. Step 5: Solve for x
    x = 5,984,026,491.56/91,129.60
  6. Step 6: Final answer
    x = 65,665.01

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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.