Home / 52,011.05-78,028.11-20,424.15

Finding the Fourth Proportional to 52,011.05, 78,028.11 and 20,424.15

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Solution

The fourth proportional to 52,011.05, 78,028.11 and 20,424.15 is: 30,640.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,011.05 : 78,028.11 = 20,424.15 : x
  2. Step 2: Convert to fraction form
    52,011.05/78,028.11 = 20,424.15/x
  3. Step 3: Cross multiply
    52,011.05x = 78,028.11 × 20,424.15
  4. Step 4: Simplify right side
    52,011.05x = 1,593,657,822.86
  5. Step 5: Solve for x
    x = 1,593,657,822.86/52,011.05
  6. Step 6: Final answer
    x = 30,640.76

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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.