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Finding the Fourth Proportional to 62,878.92, 86,728.97 and 42,700.77

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Solution

The fourth proportional to 62,878.92, 86,728.97 and 42,700.77 is: 58,897.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,878.92 : 86,728.97 = 42,700.77 : x
  2. Step 2: Convert to fraction form
    62,878.92/86,728.97 = 42,700.77/x
  3. Step 3: Cross multiply
    62,878.92x = 86,728.97 × 42,700.77
  4. Step 4: Simplify right side
    62,878.92x = 3,703,393,907.06
  5. Step 5: Solve for x
    x = 3,703,393,907.06/62,878.92
  6. Step 6: Final answer
    x = 58,897.23

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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.