Home / 65,511.47-90,406.13-37,218.71

Finding the Fourth Proportional to 65,511.47, 90,406.13 and 37,218.71

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Solution

The fourth proportional to 65,511.47, 90,406.13 and 37,218.71 is: 51,361.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,511.47 : 90,406.13 = 37,218.71 : x
  2. Step 2: Convert to fraction form
    65,511.47/90,406.13 = 37,218.71/x
  3. Step 3: Cross multiply
    65,511.47x = 90,406.13 × 37,218.71
  4. Step 4: Simplify right side
    65,511.47x = 3,364,798,896.57
  5. Step 5: Solve for x
    x = 3,364,798,896.57/65,511.47
  6. Step 6: Final answer
    x = 51,361.99

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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.