Home / 78,785.10-108,720.75-46,953.42

Finding the Fourth Proportional to 78,785.10, 108,720.75 and 46,953.42

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Solution

The fourth proportional to 78,785.10, 108,720.75 and 46,953.42 is: 64,794.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,785.10 : 108,720.75 = 46,953.42 : x
  2. Step 2: Convert to fraction form
    78,785.10/108,720.75 = 46,953.42/x
  3. Step 3: Cross multiply
    78,785.10x = 108,720.75 × 46,953.42
  4. Step 4: Simplify right side
    78,785.10x = 5,104,811,037.47
  5. Step 5: Solve for x
    x = 5,104,811,037.47/78,785.10
  6. Step 6: Final answer
    x = 64,794.12

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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.