Home / 83,415.16-115,121.22-47,610.58

Finding the Fourth Proportional to 83,415.16, 115,121.22 and 47,610.58

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Solution

The fourth proportional to 83,415.16, 115,121.22 and 47,610.58 is: 65,707.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,415.16 : 115,121.22 = 47,610.58 : x
  2. Step 2: Convert to fraction form
    83,415.16/115,121.22 = 47,610.58/x
  3. Step 3: Cross multiply
    83,415.16x = 115,121.22 × 47,610.58
  4. Step 4: Simplify right side
    83,415.16x = 5,480,988,054.51
  5. Step 5: Solve for x
    x = 5,480,988,054.51/83,415.16
  6. Step 6: Final answer
    x = 65,707.34

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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.