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Finding the Fourth Proportional to 52,685.82, 79,028.80 and 21,521.08

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Solution

The fourth proportional to 52,685.82, 79,028.80 and 21,521.08 is: 32,281.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,685.82 : 79,028.80 = 21,521.08 : x
  2. Step 2: Convert to fraction form
    52,685.82/79,028.80 = 21,521.08/x
  3. Step 3: Cross multiply
    52,685.82x = 79,028.80 × 21,521.08
  4. Step 4: Simplify right side
    52,685.82x = 1,700,785,127.10
  5. Step 5: Solve for x
    x = 1,700,785,127.10/52,685.82
  6. Step 6: Final answer
    x = 32,281.65

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1.5x scale

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.