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Finding the Fourth Proportional to 63,919.80, 88,230.06 and 42,703.80

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Solution

The fourth proportional to 63,919.80, 88,230.06 and 42,703.80 is: 58,945.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,919.80 : 88,230.06 = 42,703.80 : x
  2. Step 2: Convert to fraction form
    63,919.80/88,230.06 = 42,703.80/x
  3. Step 3: Cross multiply
    63,919.80x = 88,230.06 × 42,703.80
  4. Step 4: Simplify right side
    63,919.80x = 3,767,758,836.23
  5. Step 5: Solve for x
    x = 3,767,758,836.23/63,919.80
  6. Step 6: Final answer
    x = 58,945.10

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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.