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Finding the Fourth Proportional to 92,849, 128,131.75 and 50,407.53

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Solution

The fourth proportional to 92,849, 128,131.75 and 50,407.53 is: 69,562.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,849 : 128,131.75 = 50,407.53 : x
  2. Step 2: Convert to fraction form
    92,849/128,131.75 = 50,407.53/x
  3. Step 3: Cross multiply
    92,849x = 128,131.75 × 50,407.53
  4. Step 4: Simplify right side
    92,849x = 6,458,805,032.08
  5. Step 5: Solve for x
    x = 6,458,805,032.08/92,849
  6. Step 6: Final answer
    x = 69,562.46

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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.