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Finding the Fourth Proportional to 91,018, 125,605.44 and 50,734.32

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Solution

The fourth proportional to 91,018, 125,605.44 and 50,734.32 is: 70,013.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,018 : 125,605.44 = 50,734.32 : x
  2. Step 2: Convert to fraction form
    91,018/125,605.44 = 50,734.32/x
  3. Step 3: Cross multiply
    91,018x = 125,605.44 × 50,734.32
  4. Step 4: Simplify right side
    91,018x = 6,372,506,586.70
  5. Step 5: Solve for x
    x = 6,372,506,586.70/91,018
  6. Step 6: Final answer
    x = 70,013.70

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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.