Home / 90,319.01-135,562.57-45,978.96

Finding the Fourth Proportional to 90,319.01, 135,562.57 and 45,978.96

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Solution

The fourth proportional to 90,319.01, 135,562.57 and 45,978.96 is: 69,011.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,319.01 : 135,562.57 = 45,978.96 : x
  2. Step 2: Convert to fraction form
    90,319.01/135,562.57 = 45,978.96/x
  3. Step 3: Cross multiply
    90,319.01x = 135,562.57 × 45,978.96
  4. Step 4: Simplify right side
    90,319.01x = 6,233,025,420.66
  5. Step 5: Solve for x
    x = 6,233,025,420.66/90,319.01
  6. Step 6: Final answer
    x = 69,011.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.