Home / 66,618.29-91,931.68-36,403.72

Finding the Fourth Proportional to 66,618.29, 91,931.68 and 36,403.72

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Solution

The fourth proportional to 66,618.29, 91,931.68 and 36,403.72 is: 50,236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,618.29 : 91,931.68 = 36,403.72 : x
  2. Step 2: Convert to fraction form
    66,618.29/91,931.68 = 36,403.72/x
  3. Step 3: Cross multiply
    66,618.29x = 91,931.68 × 36,403.72
  4. Step 4: Simplify right side
    66,618.29x = 3,346,655,137.85
  5. Step 5: Solve for x
    x = 3,346,655,137.85/66,618.29
  6. Step 6: Final answer
    x = 50,236.28

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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.