Home / 55,086.31-76,022.72-30,888.91

Finding the Fourth Proportional to 55,086.31, 76,022.72 and 30,888.91

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Solution

The fourth proportional to 55,086.31, 76,022.72 and 30,888.91 is: 42,628.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,086.31 : 76,022.72 = 30,888.91 : x
  2. Step 2: Convert to fraction form
    55,086.31/76,022.72 = 30,888.91/x
  3. Step 3: Cross multiply
    55,086.31x = 76,022.72 × 30,888.91
  4. Step 4: Simplify right side
    55,086.31x = 2,348,258,956.04
  5. Step 5: Solve for x
    x = 2,348,258,956.04/55,086.31
  6. Step 6: Final answer
    x = 42,628.72

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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.