Home / 83,530.40-115,272.72-45,289.85

Finding the Fourth Proportional to 83,530.40, 115,272.72 and 45,289.85

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Solution

The fourth proportional to 83,530.40, 115,272.72 and 45,289.85 is: 62,500.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,530.40 : 115,272.72 = 45,289.85 : x
  2. Step 2: Convert to fraction form
    83,530.40/115,272.72 = 45,289.85/x
  3. Step 3: Cross multiply
    83,530.40x = 115,272.72 × 45,289.85
  4. Step 4: Simplify right side
    83,530.40x = 5,220,683,621.53
  5. Step 5: Solve for x
    x = 5,220,683,621.53/83,530.40
  6. Step 6: Final answer
    x = 62,500.41

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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.