Home / 78,085.04-107,757.40-42,275.06

Finding the Fourth Proportional to 78,085.04, 107,757.40 and 42,275.06

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Solution

The fourth proportional to 78,085.04, 107,757.40 and 42,275.06 is: 58,339.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,085.04 : 107,757.40 = 42,275.06 : x
  2. Step 2: Convert to fraction form
    78,085.04/107,757.40 = 42,275.06/x
  3. Step 3: Cross multiply
    78,085.04x = 107,757.40 × 42,275.06
  4. Step 4: Simplify right side
    78,085.04x = 4,555,450,550.44
  5. Step 5: Solve for x
    x = 4,555,450,550.44/78,085.04
  6. Step 6: Final answer
    x = 58,339.61

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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.