Home / 51,268.68-76,913.28-21,686.40

Finding the Fourth Proportional to 51,268.68, 76,913.28 and 21,686.40

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Solution

The fourth proportional to 51,268.68, 76,913.28 and 21,686.40 is: 32,533.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,268.68 : 76,913.28 = 21,686.40 : x
  2. Step 2: Convert to fraction form
    51,268.68/76,913.28 = 21,686.40/x
  3. Step 3: Cross multiply
    51,268.68x = 76,913.28 × 21,686.40
  4. Step 4: Simplify right side
    51,268.68x = 1,667,972,155.39
  5. Step 5: Solve for x
    x = 1,667,972,155.39/51,268.68
  6. Step 6: Final answer
    x = 32,533.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.