Home / 52,513.15-78,774.63-20,915.59

Finding the Fourth Proportional to 52,513.15, 78,774.63 and 20,915.59

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Solution

The fourth proportional to 52,513.15, 78,774.63 and 20,915.59 is: 31,375.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,513.15 : 78,774.63 = 20,915.59 : x
  2. Step 2: Convert to fraction form
    52,513.15/78,774.63 = 20,915.59/x
  3. Step 3: Cross multiply
    52,513.15x = 78,774.63 × 20,915.59
  4. Step 4: Simplify right side
    52,513.15x = 1,647,617,863.48
  5. Step 5: Solve for x
    x = 1,647,617,863.48/52,513.15
  6. Step 6: Final answer
    x = 31,375.34

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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.