Home / 97,855.12-135,040.06-55,421.85

Finding the Fourth Proportional to 97,855.12, 135,040.06 and 55,421.85

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Solution

The fourth proportional to 97,855.12, 135,040.06 and 55,421.85 is: 76,482.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,855.12 : 135,040.06 = 55,421.85 : x
  2. Step 2: Convert to fraction form
    97,855.12/135,040.06 = 55,421.85/x
  3. Step 3: Cross multiply
    97,855.12x = 135,040.06 × 55,421.85
  4. Step 4: Simplify right side
    97,855.12x = 7,484,169,949.31
  5. Step 5: Solve for x
    x = 7,484,169,949.31/97,855.12
  6. Step 6: Final answer
    x = 76,482.15

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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.