Home / 66,905.12-92,322.42-38,619.92

Finding the Fourth Proportional to 66,905.12, 92,322.42 and 38,619.92

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Solution

The fourth proportional to 66,905.12, 92,322.42 and 38,619.92 is: 53,291.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,905.12 : 92,322.42 = 38,619.92 : x
  2. Step 2: Convert to fraction form
    66,905.12/92,322.42 = 38,619.92/x
  3. Step 3: Cross multiply
    66,905.12x = 92,322.42 × 38,619.92
  4. Step 4: Simplify right side
    66,905.12x = 3,565,484,560.59
  5. Step 5: Solve for x
    x = 3,565,484,560.59/66,905.12
  6. Step 6: Final answer
    x = 53,291.65

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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.