Home / 66,767.91-92,139.57-39,909.12

Finding the Fourth Proportional to 66,767.91, 92,139.57 and 39,909.12

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Solution

The fourth proportional to 66,767.91, 92,139.57 and 39,909.12 is: 55,074.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,767.91 : 92,139.57 = 39,909.12 : x
  2. Step 2: Convert to fraction form
    66,767.91/92,139.57 = 39,909.12/x
  3. Step 3: Cross multiply
    66,767.91x = 92,139.57 × 39,909.12
  4. Step 4: Simplify right side
    66,767.91x = 3,677,209,155.88
  5. Step 5: Solve for x
    x = 3,677,209,155.88/66,767.91
  6. Step 6: Final answer
    x = 55,074.50

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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.