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Finding the Fourth Proportional to 35,281.71, 48,711.56 and 21,867.19

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Solution

The fourth proportional to 35,281.71, 48,711.56 and 21,867.19 is: 30,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,281.71 : 48,711.56 = 21,867.19 : x
  2. Step 2: Convert to fraction form
    35,281.71/48,711.56 = 21,867.19/x
  3. Step 3: Cross multiply
    35,281.71x = 48,711.56 × 21,867.19
  4. Step 4: Simplify right side
    35,281.71x = 1,065,184,706.60
  5. Step 5: Solve for x
    x = 1,065,184,706.60/35,281.71
  6. Step 6: Final answer
    x = 30,190.85

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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.