Home / 85,128.90-117,476.78-46,887.72

Finding the Fourth Proportional to 85,128.90, 117,476.78 and 46,887.72

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Solution

The fourth proportional to 85,128.90, 117,476.78 and 46,887.72 is: 64,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,128.90 : 117,476.78 = 46,887.72 : x
  2. Step 2: Convert to fraction form
    85,128.90/117,476.78 = 46,887.72/x
  3. Step 3: Cross multiply
    85,128.90x = 117,476.78 × 46,887.72
  4. Step 4: Simplify right side
    85,128.90x = 5,508,218,367.14
  5. Step 5: Solve for x
    x = 5,508,218,367.14/85,128.90
  6. Step 6: Final answer
    x = 64,704.45

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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.