Home / 85,154.09-117,512.67-47,428.34

Finding the Fourth Proportional to 85,154.09, 117,512.67 and 47,428.34

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Solution

The fourth proportional to 85,154.09, 117,512.67 and 47,428.34 is: 65,451.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,154.09 : 117,512.67 = 47,428.34 : x
  2. Step 2: Convert to fraction form
    85,154.09/117,512.67 = 47,428.34/x
  3. Step 3: Cross multiply
    85,154.09x = 117,512.67 × 47,428.34
  4. Step 4: Simplify right side
    85,154.09x = 5,573,430,867.07
  5. Step 5: Solve for x
    x = 5,573,430,867.07/85,154.09
  6. Step 6: Final answer
    x = 65,451.12

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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.