Home / 75,728.05-104,500.50-45,507.76

Finding the Fourth Proportional to 75,728.05, 104,500.50 and 45,507.76

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Solution

The fourth proportional to 75,728.05, 104,500.50 and 45,507.76 is: 62,798.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,728.05 : 104,500.50 = 45,507.76 : x
  2. Step 2: Convert to fraction form
    75,728.05/104,500.50 = 45,507.76/x
  3. Step 3: Cross multiply
    75,728.05x = 104,500.50 × 45,507.76
  4. Step 4: Simplify right side
    75,728.05x = 4,755,583,673.88
  5. Step 5: Solve for x
    x = 4,755,583,673.88/75,728.05
  6. Step 6: Final answer
    x = 62,798.18

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1.5x scale

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.