Home / 77,321.38-106,693.53-45,478.66

Finding the Fourth Proportional to 77,321.38, 106,693.53 and 45,478.66

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Solution

The fourth proportional to 77,321.38, 106,693.53 and 45,478.66 is: 62,754.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,321.38 : 106,693.53 = 45,478.66 : x
  2. Step 2: Convert to fraction form
    77,321.38/106,693.53 = 45,478.66/x
  3. Step 3: Cross multiply
    77,321.38x = 106,693.53 × 45,478.66
  4. Step 4: Simplify right side
    77,321.38x = 4,852,278,775.07
  5. Step 5: Solve for x
    x = 4,852,278,775.07/77,321.38
  6. Step 6: Final answer
    x = 62,754.68

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1.5x scale

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.