Home / 56,758.28-78,244.60-39,709.71

Finding the Fourth Proportional to 56,758.28, 78,244.60 and 39,709.71

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Solution

The fourth proportional to 56,758.28, 78,244.60 and 39,709.71 is: 54,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,758.28 : 78,244.60 = 39,709.71 : x
  2. Step 2: Convert to fraction form
    56,758.28/78,244.60 = 39,709.71/x
  3. Step 3: Cross multiply
    56,758.28x = 78,244.60 × 39,709.71
  4. Step 4: Simplify right side
    56,758.28x = 3,107,069,785.29
  5. Step 5: Solve for x
    x = 3,107,069,785.29/56,758.28
  6. Step 6: Final answer
    x = 54,742.14

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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.