Home / 66,388.98-91,624.32-40,890.18

Finding the Fourth Proportional to 66,388.98, 91,624.32 and 40,890.18

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Solution

The fourth proportional to 66,388.98, 91,624.32 and 40,890.18 is: 56,433.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,388.98 : 91,624.32 = 40,890.18 : x
  2. Step 2: Convert to fraction form
    66,388.98/91,624.32 = 40,890.18/x
  3. Step 3: Cross multiply
    66,388.98x = 91,624.32 × 40,890.18
  4. Step 4: Simplify right side
    66,388.98x = 3,746,534,937.18
  5. Step 5: Solve for x
    x = 3,746,534,937.18/66,388.98
  6. Step 6: Final answer
    x = 56,433.08

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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.