Home / 77,531.36-107,009.94-47,310.20

Finding the Fourth Proportional to 77,531.36, 107,009.94 and 47,310.20

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Solution

The fourth proportional to 77,531.36, 107,009.94 and 47,310.20 is: 65,298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,531.36 : 107,009.94 = 47,310.20 : x
  2. Step 2: Convert to fraction form
    77,531.36/107,009.94 = 47,310.20/x
  3. Step 3: Cross multiply
    77,531.36x = 107,009.94 × 47,310.20
  4. Step 4: Simplify right side
    77,531.36x = 5,062,661,663.39
  5. Step 5: Solve for x
    x = 5,062,661,663.39/77,531.36
  6. Step 6: Final answer
    x = 65,298.24

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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.