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Finding the Fourth Proportional to 66,572.19, 91,870.13 and 36,356.96

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Solution

The fourth proportional to 66,572.19, 91,870.13 and 36,356.96 is: 50,172.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,572.19 : 91,870.13 = 36,356.96 : x
  2. Step 2: Convert to fraction form
    66,572.19/91,870.13 = 36,356.96/x
  3. Step 3: Cross multiply
    66,572.19x = 91,870.13 × 36,356.96
  4. Step 4: Simplify right side
    66,572.19x = 3,340,118,962.17
  5. Step 5: Solve for x
    x = 3,340,118,962.17/66,572.19
  6. Step 6: Final answer
    x = 50,172.89

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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.