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Finding the Fourth Proportional to 90,622.80, 125,055.12 and 50,339.16

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Solution

The fourth proportional to 90,622.80, 125,055.12 and 50,339.16 is: 69,465.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,622.80 : 125,055.12 = 50,339.16 : x
  2. Step 2: Convert to fraction form
    90,622.80/125,055.12 = 50,339.16/x
  3. Step 3: Cross multiply
    90,622.80x = 125,055.12 × 50,339.16
  4. Step 4: Simplify right side
    90,622.80x = 6,295,169,694.50
  5. Step 5: Solve for x
    x = 6,295,169,694.50/90,622.80
  6. Step 6: Final answer
    x = 69,465.63

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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.