Home / 45,138.98-67,756.80-38,203.76

Finding the Fourth Proportional to 45,138.98, 67,756.80 and 38,203.76

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Solution

The fourth proportional to 45,138.98, 67,756.80 and 38,203.76 is: 57,346.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,138.98 : 67,756.80 = 38,203.76 : x
  2. Step 2: Convert to fraction form
    45,138.98/67,756.80 = 38,203.76/x
  3. Step 3: Cross multiply
    45,138.98x = 67,756.80 × 38,203.76
  4. Step 4: Simplify right side
    45,138.98x = 2,588,564,525.57
  5. Step 5: Solve for x
    x = 2,588,564,525.57/45,138.98
  6. Step 6: Final answer
    x = 57,346.54

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1.5x scale

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.