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Finding the Fourth Proportional to 90,260, 124,558.80 and 50,516

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Solution

The fourth proportional to 90,260, 124,558.80 and 50,516 is: 69,712.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,260 : 124,558.80 = 50,516 : x
  2. Step 2: Convert to fraction form
    90,260/124,558.80 = 50,516/x
  3. Step 3: Cross multiply
    90,260x = 124,558.80 × 50,516
  4. Step 4: Simplify right side
    90,260x = 6,292,212,340.80
  5. Step 5: Solve for x
    x = 6,292,212,340.80/90,260
  6. Step 6: Final answer
    x = 69,712.08

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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.