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Finding the Fourth Proportional to 92,871.90, 128,163.33 and 50,430.33

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Solution

The fourth proportional to 92,871.90, 128,163.33 and 50,430.33 is: 69,593.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,871.90 : 128,163.33 = 50,430.33 : x
  2. Step 2: Convert to fraction form
    92,871.90/128,163.33 = 50,430.33/x
  3. Step 3: Cross multiply
    92,871.90x = 128,163.33 × 50,430.33
  4. Step 4: Simplify right side
    92,871.90x = 6,463,319,025.80
  5. Step 5: Solve for x
    x = 6,463,319,025.80/92,871.90
  6. Step 6: Final answer
    x = 69,593.91

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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.