Home / 66,631.18-91,942.14-42,790.15

Finding the Fourth Proportional to 66,631.18, 91,942.14 and 42,790.15

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Solution

The fourth proportional to 66,631.18, 91,942.14 and 42,790.15 is: 59,044.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,631.18 : 91,942.14 = 42,790.15 : x
  2. Step 2: Convert to fraction form
    66,631.18/91,942.14 = 42,790.15/x
  3. Step 3: Cross multiply
    66,631.18x = 91,942.14 × 42,790.15
  4. Step 4: Simplify right side
    66,631.18x = 3,934,217,288.26
  5. Step 5: Solve for x
    x = 3,934,217,288.26/66,631.18
  6. Step 6: Final answer
    x = 59,044.69

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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.