Home / 55,712.16-76,883.76-30,561.84

Finding the Fourth Proportional to 55,712.16, 76,883.76 and 30,561.84

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Solution

The fourth proportional to 55,712.16, 76,883.76 and 30,561.84 is: 42,175.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,712.16 : 76,883.76 = 30,561.84 : x
  2. Step 2: Convert to fraction form
    55,712.16/76,883.76 = 30,561.84/x
  3. Step 3: Cross multiply
    55,712.16x = 76,883.76 × 30,561.84
  4. Step 4: Simplify right side
    55,712.16x = 2,349,709,171.72
  5. Step 5: Solve for x
    x = 2,349,709,171.72/55,712.16
  6. Step 6: Final answer
    x = 42,175.88

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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.