Home / 61,220.38-91,639.74-47,143.84

Finding the Fourth Proportional to 61,220.38, 91,639.74 and 47,143.84

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Solution

The fourth proportional to 61,220.38, 91,639.74 and 47,143.84 is: 70,568.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,220.38 : 91,639.74 = 47,143.84 : x
  2. Step 2: Convert to fraction form
    61,220.38/91,639.74 = 47,143.84/x
  3. Step 3: Cross multiply
    61,220.38x = 91,639.74 × 47,143.84
  4. Step 4: Simplify right side
    61,220.38x = 4,320,249,240.20
  5. Step 5: Solve for x
    x = 4,320,249,240.20/61,220.38
  6. Step 6: Final answer
    x = 70,568.81

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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.