Home / 66,789.12-92,116.80-42,917.88

Finding the Fourth Proportional to 66,789.12, 92,116.80 and 42,917.88

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Solution

The fourth proportional to 66,789.12, 92,116.80 and 42,917.88 is: 59,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,789.12 : 92,116.80 = 42,917.88 : x
  2. Step 2: Convert to fraction form
    66,789.12/92,116.80 = 42,917.88/x
  3. Step 3: Cross multiply
    66,789.12x = 92,116.80 × 42,917.88
  4. Step 4: Simplify right side
    66,789.12x = 3,953,457,768.38
  5. Step 5: Solve for x
    x = 3,953,457,768.38/66,789.12
  6. Step 6: Final answer
    x = 59,193.14

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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.