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Finding the Fourth Proportional to 65,339.98, 90,219.96 and 50,208.79

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Solution

The fourth proportional to 65,339.98, 90,219.96 and 50,208.79 is: 69,327.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,339.98 : 90,219.96 = 50,208.79 : x
  2. Step 2: Convert to fraction form
    65,339.98/90,219.96 = 50,208.79/x
  3. Step 3: Cross multiply
    65,339.98x = 90,219.96 × 50,208.79
  4. Step 4: Simplify right side
    65,339.98x = 4,529,835,025.45
  5. Step 5: Solve for x
    x = 4,529,835,025.45/65,339.98
  6. Step 6: Final answer
    x = 69,327.16

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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.