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Finding the Fourth Proportional to 90,332.69, 135,623.16 and 45,989.24

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Solution

The fourth proportional to 90,332.69, 135,623.16 and 45,989.24 is: 69,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,332.69 : 135,623.16 = 45,989.24 : x
  2. Step 2: Convert to fraction form
    90,332.69/135,623.16 = 45,989.24/x
  3. Step 3: Cross multiply
    90,332.69x = 135,623.16 × 45,989.24
  4. Step 4: Simplify right side
    90,332.69x = 6,237,205,376.68
  5. Step 5: Solve for x
    x = 6,237,205,376.68/90,332.69
  6. Step 6: Final answer
    x = 69,047.05

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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.