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Finding the Fourth Proportional to 39,969.84, 55,158.08 and 22,064.87

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Solution

The fourth proportional to 39,969.84, 55,158.08 and 22,064.87 is: 30,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.84 : 55,158.08 = 22,064.87 : x
  2. Step 2: Convert to fraction form
    39,969.84/55,158.08 = 22,064.87/x
  3. Step 3: Cross multiply
    39,969.84x = 55,158.08 × 22,064.87
  4. Step 4: Simplify right side
    39,969.84x = 1,217,055,478.53
  5. Step 5: Solve for x
    x = 1,217,055,478.53/39,969.84
  6. Step 6: Final answer
    x = 30,449.35

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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.