Home / 85,154.94-117,512.29-47,428.38

Finding the Fourth Proportional to 85,154.94, 117,512.29 and 47,428.38

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Solution

The fourth proportional to 85,154.94, 117,512.29 and 47,428.38 is: 65,450.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,154.94 : 117,512.29 = 47,428.38 : x
  2. Step 2: Convert to fraction form
    85,154.94/117,512.29 = 47,428.38/x
  3. Step 3: Cross multiply
    85,154.94x = 117,512.29 × 47,428.38
  4. Step 4: Simplify right side
    85,154.94x = 5,573,417,544.79
  5. Step 5: Solve for x
    x = 5,573,417,544.79/85,154.94
  6. Step 6: Final answer
    x = 65,450.31

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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.