Home / 88,128.52-121,604.49-50,395.48

Finding the Fourth Proportional to 88,128.52, 121,604.49 and 50,395.48

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Solution

The fourth proportional to 88,128.52, 121,604.49 and 50,395.48 is: 69,538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,128.52 : 121,604.49 = 50,395.48 : x
  2. Step 2: Convert to fraction form
    88,128.52/121,604.49 = 50,395.48/x
  3. Step 3: Cross multiply
    88,128.52x = 121,604.49 × 50,395.48
  4. Step 4: Simplify right side
    88,128.52x = 6,128,316,339.69
  5. Step 5: Solve for x
    x = 6,128,316,339.69/88,128.52
  6. Step 6: Final answer
    x = 69,538.40

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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.