Home / 78,278.48-117,262.20-43,130.96

Finding the Fourth Proportional to 78,278.48, 117,262.20 and 43,130.96

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Solution

The fourth proportional to 78,278.48, 117,262.20 and 43,130.96 is: 64,610.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,278.48 : 117,262.20 = 43,130.96 : x
  2. Step 2: Convert to fraction form
    78,278.48/117,262.20 = 43,130.96/x
  3. Step 3: Cross multiply
    78,278.48x = 117,262.20 × 43,130.96
  4. Step 4: Simplify right side
    78,278.48x = 5,057,631,257.71
  5. Step 5: Solve for x
    x = 5,057,631,257.71/78,278.48
  6. Step 6: Final answer
    x = 64,610.75

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1.5x scale

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.