Home / 77,785.92-116,690.22-38,345.40

Finding the Fourth Proportional to 77,785.92, 116,690.22 and 38,345.40

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Solution

The fourth proportional to 77,785.92, 116,690.22 and 38,345.40 is: 57,523.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,785.92 : 116,690.22 = 38,345.40 : x
  2. Step 2: Convert to fraction form
    77,785.92/116,690.22 = 38,345.40/x
  3. Step 3: Cross multiply
    77,785.92x = 116,690.22 × 38,345.40
  4. Step 4: Simplify right side
    77,785.92x = 4,474,533,161.99
  5. Step 5: Solve for x
    x = 4,474,533,161.99/77,785.92
  6. Step 6: Final answer
    x = 57,523.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.