Home / 55,482.48-83,234.88-20,421.36

Finding the Fourth Proportional to 55,482.48, 83,234.88 and 20,421.36

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Solution

The fourth proportional to 55,482.48, 83,234.88 and 20,421.36 is: 30,636.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,482.48 : 83,234.88 = 20,421.36 : x
  2. Step 2: Convert to fraction form
    55,482.48/83,234.88 = 20,421.36/x
  3. Step 3: Cross multiply
    55,482.48x = 83,234.88 × 20,421.36
  4. Step 4: Simplify right side
    55,482.48x = 1,699,769,449.04
  5. Step 5: Solve for x
    x = 1,699,769,449.04/55,482.48
  6. Step 6: Final answer
    x = 30,636.15

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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.