Home / 85,278.29-117,684.50-47,039.18

Finding the Fourth Proportional to 85,278.29, 117,684.50 and 47,039.18

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Solution

The fourth proportional to 85,278.29, 117,684.50 and 47,039.18 is: 64,914.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,278.29 : 117,684.50 = 47,039.18 : x
  2. Step 2: Convert to fraction form
    85,278.29/117,684.50 = 47,039.18/x
  3. Step 3: Cross multiply
    85,278.29x = 117,684.50 × 47,039.18
  4. Step 4: Simplify right side
    85,278.29x = 5,535,781,555.09
  5. Step 5: Solve for x
    x = 5,535,781,555.09/85,278.29
  6. Step 6: Final answer
    x = 64,914.32

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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.