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Finding the Fourth Proportional to 90,488.92, 124,875 and 50,203.48

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Solution

The fourth proportional to 90,488.92, 124,875 and 50,203.48 is: 69,280.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,488.92 : 124,875 = 50,203.48 : x
  2. Step 2: Convert to fraction form
    90,488.92/124,875 = 50,203.48/x
  3. Step 3: Cross multiply
    90,488.92x = 124,875 × 50,203.48
  4. Step 4: Simplify right side
    90,488.92x = 6,269,159,565
  5. Step 5: Solve for x
    x = 6,269,159,565/90,488.92
  6. Step 6: Final answer
    x = 69,280.96

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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.