Home / 57,169.45-78,854.47-40,209.67

Finding the Fourth Proportional to 57,169.45, 78,854.47 and 40,209.67

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Solution

The fourth proportional to 57,169.45, 78,854.47 and 40,209.67 is: 55,461.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,169.45 : 78,854.47 = 40,209.67 : x
  2. Step 2: Convert to fraction form
    57,169.45/78,854.47 = 40,209.67/x
  3. Step 3: Cross multiply
    57,169.45x = 78,854.47 × 40,209.67
  4. Step 4: Simplify right side
    57,169.45x = 3,170,712,216.72
  5. Step 5: Solve for x
    x = 3,170,712,216.72/57,169.45
  6. Step 6: Final answer
    x = 55,461.65

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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.