Home / 77,080.48-115,339.53-45,505.66

Finding the Fourth Proportional to 77,080.48, 115,339.53 and 45,505.66

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Solution

The fourth proportional to 77,080.48, 115,339.53 and 45,505.66 is: 68,092.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,080.48 : 115,339.53 = 45,505.66 : x
  2. Step 2: Convert to fraction form
    77,080.48/115,339.53 = 45,505.66/x
  3. Step 3: Cross multiply
    77,080.48x = 115,339.53 × 45,505.66
  4. Step 4: Simplify right side
    77,080.48x = 5,248,601,436.74
  5. Step 5: Solve for x
    x = 5,248,601,436.74/77,080.48
  6. Step 6: Final answer
    x = 68,092.49

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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.