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Finding the Fourth Proportional to 92,570.40, 127,745.64 and 50,128.56

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Solution

The fourth proportional to 92,570.40, 127,745.64 and 50,128.56 is: 69,176.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,570.40 : 127,745.64 = 50,128.56 : x
  2. Step 2: Convert to fraction form
    92,570.40/127,745.64 = 50,128.56/x
  3. Step 3: Cross multiply
    92,570.40x = 127,745.64 × 50,128.56
  4. Step 4: Simplify right side
    92,570.40x = 6,403,704,979.48
  5. Step 5: Solve for x
    x = 6,403,704,979.48/92,570.40
  6. Step 6: Final answer
    x = 69,176.59

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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.