Home / 66,440.16-91,705.44-38,164.80

Finding the Fourth Proportional to 66,440.16, 91,705.44 and 38,164.80

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Solution

The fourth proportional to 66,440.16, 91,705.44 and 38,164.80 is: 52,677.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440.16 : 91,705.44 = 38,164.80 : x
  2. Step 2: Convert to fraction form
    66,440.16/91,705.44 = 38,164.80/x
  3. Step 3: Cross multiply
    66,440.16x = 91,705.44 × 38,164.80
  4. Step 4: Simplify right side
    66,440.16x = 3,499,919,776.51
  5. Step 5: Solve for x
    x = 3,499,919,776.51/66,440.16
  6. Step 6: Final answer
    x = 52,677.77

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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.