Home / 52,513.32-78,720.16-20,942.84

Finding the Fourth Proportional to 52,513.32, 78,720.16 and 20,942.84

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Solution

The fourth proportional to 52,513.32, 78,720.16 and 20,942.84 is: 31,394.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,513.32 : 78,720.16 = 20,942.84 : x
  2. Step 2: Convert to fraction form
    52,513.32/78,720.16 = 20,942.84/x
  3. Step 3: Cross multiply
    52,513.32x = 78,720.16 × 20,942.84
  4. Step 4: Simplify right side
    52,513.32x = 1,648,623,715.65
  5. Step 5: Solve for x
    x = 1,648,623,715.65/52,513.32
  6. Step 6: Final answer
    x = 31,394.39

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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.