Home / 90,798.57-125,300.15-50,511.47

Finding the Fourth Proportional to 90,798.57, 125,300.15 and 50,511.47

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Solution

The fourth proportional to 90,798.57, 125,300.15 and 50,511.47 is: 69,704.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,798.57 : 125,300.15 = 50,511.47 : x
  2. Step 2: Convert to fraction form
    90,798.57/125,300.15 = 50,511.47/x
  3. Step 3: Cross multiply
    90,798.57x = 125,300.15 × 50,511.47
  4. Step 4: Simplify right side
    90,798.57x = 6,329,094,078.08
  5. Step 5: Solve for x
    x = 6,329,094,078.08/90,798.57
  6. Step 6: Final answer
    x = 69,704.78

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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.