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Finding the Fourth Proportional to 92,878.38, 128,171.04 and 50,437.20

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Solution

The fourth proportional to 92,878.38, 128,171.04 and 50,437.20 is: 69,602.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,878.38 : 128,171.04 = 50,437.20 : x
  2. Step 2: Convert to fraction form
    92,878.38/128,171.04 = 50,437.20/x
  3. Step 3: Cross multiply
    92,878.38x = 128,171.04 × 50,437.20
  4. Step 4: Simplify right side
    92,878.38x = 6,464,588,378.69
  5. Step 5: Solve for x
    x = 6,464,588,378.69/92,878.38
  6. Step 6: Final answer
    x = 69,602.73

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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.