Home / 77,660.31-116,319.72-64,180.53

Finding the Fourth Proportional to 77,660.31, 116,319.72 and 64,180.53

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Solution

The fourth proportional to 77,660.31, 116,319.72 and 64,180.53 is: 96,129.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,660.31 : 116,319.72 = 64,180.53 : x
  2. Step 2: Convert to fraction form
    77,660.31/116,319.72 = 64,180.53/x
  3. Step 3: Cross multiply
    77,660.31x = 116,319.72 × 64,180.53
  4. Step 4: Simplify right side
    77,660.31x = 7,465,461,279.05
  5. Step 5: Solve for x
    x = 7,465,461,279.05/77,660.31
  6. Step 6: Final answer
    x = 96,129.69

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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.