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Finding the Fourth Proportional to 62,838.84, 86,737.80 and 40,238.64

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Solution

The fourth proportional to 62,838.84, 86,737.80 and 40,238.64 is: 55,542.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,838.84 : 86,737.80 = 40,238.64 : x
  2. Step 2: Convert to fraction form
    62,838.84/86,737.80 = 40,238.64/x
  3. Step 3: Cross multiply
    62,838.84x = 86,737.80 × 40,238.64
  4. Step 4: Simplify right side
    62,838.84x = 3,490,211,108.59
  5. Step 5: Solve for x
    x = 3,490,211,108.59/62,838.84
  6. Step 6: Final answer
    x = 55,542.26

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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.