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Finding the Fourth Proportional to 48,706.16, 67,215.48 and 28,578.48

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Solution

The fourth proportional to 48,706.16, 67,215.48 and 28,578.48 is: 39,438.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,706.16 : 67,215.48 = 28,578.48 : x
  2. Step 2: Convert to fraction form
    48,706.16/67,215.48 = 28,578.48/x
  3. Step 3: Cross multiply
    48,706.16x = 67,215.48 × 28,578.48
  4. Step 4: Simplify right side
    48,706.16x = 1,920,916,250.87
  5. Step 5: Solve for x
    x = 1,920,916,250.87/48,706.16
  6. Step 6: Final answer
    x = 39,438.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.