Home / 42,280.80-63,416.16-11,118.48

Finding the Fourth Proportional to 42,280.80, 63,416.16 and 11,118.48

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Solution

The fourth proportional to 42,280.80, 63,416.16 and 11,118.48 is: 16,676.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,280.80 : 63,416.16 = 11,118.48 : x
  2. Step 2: Convert to fraction form
    42,280.80/63,416.16 = 11,118.48/x
  3. Step 3: Cross multiply
    42,280.80x = 63,416.16 × 11,118.48
  4. Step 4: Simplify right side
    42,280.80x = 705,091,306.64
  5. Step 5: Solve for x
    x = 705,091,306.64/42,280.80
  6. Step 6: Final answer
    x = 16,676.39

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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.