Home / 77,979.98-107,612.44-45,708.16

Finding the Fourth Proportional to 77,979.98, 107,612.44 and 45,708.16

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Solution

The fourth proportional to 77,979.98, 107,612.44 and 45,708.16 is: 63,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,979.98 : 107,612.44 = 45,708.16 : x
  2. Step 2: Convert to fraction form
    77,979.98/107,612.44 = 45,708.16/x
  3. Step 3: Cross multiply
    77,979.98x = 107,612.44 × 45,708.16
  4. Step 4: Simplify right side
    77,979.98x = 4,918,766,625.51
  5. Step 5: Solve for x
    x = 4,918,766,625.51/77,979.98
  6. Step 6: Final answer
    x = 63,077.30

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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.