Home / 75,625.28-104,391.36-56,816.72

Finding the Fourth Proportional to 75,625.28, 104,391.36 and 56,816.72

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Solution

The fourth proportional to 75,625.28, 104,391.36 and 56,816.72 is: 78,428.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,625.28 : 104,391.36 = 56,816.72 : x
  2. Step 2: Convert to fraction form
    75,625.28/104,391.36 = 56,816.72/x
  3. Step 3: Cross multiply
    75,625.28x = 104,391.36 × 56,816.72
  4. Step 4: Simplify right side
    75,625.28x = 5,931,174,671.54
  5. Step 5: Solve for x
    x = 5,931,174,671.54/75,625.28
  6. Step 6: Final answer
    x = 78,428.47

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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.