Home / 83,615.08-115,382.82-47,806.60

Finding the Fourth Proportional to 83,615.08, 115,382.82 and 47,806.60

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Solution

The fourth proportional to 83,615.08, 115,382.82 and 47,806.60 is: 65,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,615.08 : 115,382.82 = 47,806.60 : x
  2. Step 2: Convert to fraction form
    83,615.08/115,382.82 = 47,806.60/x
  3. Step 3: Cross multiply
    83,615.08x = 115,382.82 × 47,806.60
  4. Step 4: Simplify right side
    83,615.08x = 5,516,060,322.61
  5. Step 5: Solve for x
    x = 5,516,060,322.61/83,615.08
  6. Step 6: Final answer
    x = 65,969.68

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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.