Home / 66,715.08-92,078.10-38,415.56

Finding the Fourth Proportional to 66,715.08, 92,078.10 and 38,415.56

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Solution

The fourth proportional to 66,715.08, 92,078.10 and 38,415.56 is: 53,019.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,715.08 : 92,078.10 = 38,415.56 : x
  2. Step 2: Convert to fraction form
    66,715.08/92,078.10 = 38,415.56/x
  3. Step 3: Cross multiply
    66,715.08x = 92,078.10 × 38,415.56
  4. Step 4: Simplify right side
    66,715.08x = 3,537,231,775.24
  5. Step 5: Solve for x
    x = 3,537,231,775.24/66,715.08
  6. Step 6: Final answer
    x = 53,019.97

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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.