Home / 70,139.52-105,253.02-40,571.28

Finding the Fourth Proportional to 70,139.52, 105,253.02 and 40,571.28

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Solution

The fourth proportional to 70,139.52, 105,253.02 and 40,571.28 is: 60,882.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,139.52 : 105,253.02 = 40,571.28 : x
  2. Step 2: Convert to fraction form
    70,139.52/105,253.02 = 40,571.28/x
  3. Step 3: Cross multiply
    70,139.52x = 105,253.02 × 40,571.28
  4. Step 4: Simplify right side
    70,139.52x = 4,270,249,745.27
  5. Step 5: Solve for x
    x = 4,270,249,745.27/70,139.52
  6. Step 6: Final answer
    x = 60,882.22

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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.