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Finding the Fourth Proportional to 90,056, 124,284.96 and 50,319.68

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Solution

The fourth proportional to 90,056, 124,284.96 and 50,319.68 is: 69,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,056 : 124,284.96 = 50,319.68 : x
  2. Step 2: Convert to fraction form
    90,056/124,284.96 = 50,319.68/x
  3. Step 3: Cross multiply
    90,056x = 124,284.96 × 50,319.68
  4. Step 4: Simplify right side
    90,056x = 6,253,979,416.01
  5. Step 5: Solve for x
    x = 6,253,979,416.01/90,056
  6. Step 6: Final answer
    x = 69,445.45

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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.