Home / 57,279.95-85,982.76-45,509.37

Finding the Fourth Proportional to 57,279.95, 85,982.76 and 45,509.37

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Solution

The fourth proportional to 57,279.95, 85,982.76 and 45,509.37 is: 68,313.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,279.95 : 85,982.76 = 45,509.37 : x
  2. Step 2: Convert to fraction form
    57,279.95/85,982.76 = 45,509.37/x
  3. Step 3: Cross multiply
    57,279.95x = 85,982.76 × 45,509.37
  4. Step 4: Simplify right side
    57,279.95x = 3,913,021,238.46
  5. Step 5: Solve for x
    x = 3,913,021,238.46/57,279.95
  6. Step 6: Final answer
    x = 68,313.98

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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.