Home / 78,890.55-108,856.22-45,350.07

Finding the Fourth Proportional to 78,890.55, 108,856.22 and 45,350.07

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Solution

The fourth proportional to 78,890.55, 108,856.22 and 45,350.07 is: 62,575.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,890.55 : 108,856.22 = 45,350.07 : x
  2. Step 2: Convert to fraction form
    78,890.55/108,856.22 = 45,350.07/x
  3. Step 3: Cross multiply
    78,890.55x = 108,856.22 × 45,350.07
  4. Step 4: Simplify right side
    78,890.55x = 4,936,636,970.19
  5. Step 5: Solve for x
    x = 4,936,636,970.19/78,890.55
  6. Step 6: Final answer
    x = 62,575.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.