Home / 52,145.32-78,217.95-18,857.61

Finding the Fourth Proportional to 52,145.32, 78,217.95 and 18,857.61

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Solution

The fourth proportional to 52,145.32, 78,217.95 and 18,857.61 is: 28,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,145.32 : 78,217.95 = 18,857.61 : x
  2. Step 2: Convert to fraction form
    52,145.32/78,217.95 = 18,857.61/x
  3. Step 3: Cross multiply
    52,145.32x = 78,217.95 × 18,857.61
  4. Step 4: Simplify right side
    52,145.32x = 1,475,003,666.82
  5. Step 5: Solve for x
    x = 1,475,003,666.82/52,145.32
  6. Step 6: Final answer
    x = 28,286.41

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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.