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Finding the Fourth Proportional to 65,243.79, 90,079.79 and 50,109.39

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Solution

The fourth proportional to 65,243.79, 90,079.79 and 50,109.39 is: 69,184.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,243.79 : 90,079.79 = 50,109.39 : x
  2. Step 2: Convert to fraction form
    65,243.79/90,079.79 = 50,109.39/x
  3. Step 3: Cross multiply
    65,243.79x = 90,079.79 × 50,109.39
  4. Step 4: Simplify right side
    65,243.79x = 4,513,843,077.68
  5. Step 5: Solve for x
    x = 4,513,843,077.68/65,243.79
  6. Step 6: Final answer
    x = 69,184.26

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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.