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Finding the Fourth Proportional to 90,602.50, 125,028.03 and 50,318.86

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Solution

The fourth proportional to 90,602.50, 125,028.03 and 50,318.86 is: 69,438.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,602.50 : 125,028.03 = 50,318.86 : x
  2. Step 2: Convert to fraction form
    90,602.50/125,028.03 = 50,318.86/x
  3. Step 3: Cross multiply
    90,602.50x = 125,028.03 × 50,318.86
  4. Step 4: Simplify right side
    90,602.50x = 6,291,267,686.05
  5. Step 5: Solve for x
    x = 6,291,267,686.05/90,602.50
  6. Step 6: Final answer
    x = 69,438.12

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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.