Home / 55,428.64-76,491.40-30,278.14

Finding the Fourth Proportional to 55,428.64, 76,491.40 and 30,278.14

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Solution

The fourth proportional to 55,428.64, 76,491.40 and 30,278.14 is: 41,783.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,428.64 : 76,491.40 = 30,278.14 : x
  2. Step 2: Convert to fraction form
    55,428.64/76,491.40 = 30,278.14/x
  3. Step 3: Cross multiply
    55,428.64x = 76,491.40 × 30,278.14
  4. Step 4: Simplify right side
    55,428.64x = 2,316,016,859.84
  5. Step 5: Solve for x
    x = 2,316,016,859.84/55,428.64
  6. Step 6: Final answer
    x = 41,783.76

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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.