Home / 51,281.28-70,758.81-38,991.72

Finding the Fourth Proportional to 51,281.28, 70,758.81 and 38,991.72

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Solution

The fourth proportional to 51,281.28, 70,758.81 and 38,991.72 is: 53,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,281.28 : 70,758.81 = 38,991.72 : x
  2. Step 2: Convert to fraction form
    51,281.28/70,758.81 = 38,991.72/x
  3. Step 3: Cross multiply
    51,281.28x = 70,758.81 × 38,991.72
  4. Step 4: Simplify right side
    51,281.28x = 2,759,007,707.05
  5. Step 5: Solve for x
    x = 2,759,007,707.05/51,281.28
  6. Step 6: Final answer
    x = 53,801.46

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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.