Home / 65,899.32-90,930.78-39,037.56

Finding the Fourth Proportional to 65,899.32, 90,930.78 and 39,037.56

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Solution

The fourth proportional to 65,899.32, 90,930.78 and 39,037.56 is: 53,865.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,899.32 : 90,930.78 = 39,037.56 : x
  2. Step 2: Convert to fraction form
    65,899.32/90,930.78 = 39,037.56/x
  3. Step 3: Cross multiply
    65,899.32x = 90,930.78 × 39,037.56
  4. Step 4: Simplify right side
    65,899.32x = 3,549,715,780.10
  5. Step 5: Solve for x
    x = 3,549,715,780.10/65,899.32
  6. Step 6: Final answer
    x = 53,865.74

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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.