Home / 78,879.47-118,353.78-41,430.87

Finding the Fourth Proportional to 78,879.47, 118,353.78 and 41,430.87

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Solution

The fourth proportional to 78,879.47, 118,353.78 and 41,430.87 is: 62,164.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,879.47 : 118,353.78 = 41,430.87 : x
  2. Step 2: Convert to fraction form
    78,879.47/118,353.78 = 41,430.87/x
  3. Step 3: Cross multiply
    78,879.47x = 118,353.78 × 41,430.87
  4. Step 4: Simplify right side
    78,879.47x = 4,903,500,073.19
  5. Step 5: Solve for x
    x = 4,903,500,073.19/78,879.47
  6. Step 6: Final answer
    x = 62,164.47

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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.