Home / 83,621.30-115,403.09-47,322.77

Finding the Fourth Proportional to 83,621.30, 115,403.09 and 47,322.77

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Solution

The fourth proportional to 83,621.30, 115,403.09 and 47,322.77 is: 65,308.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,621.30 : 115,403.09 = 47,322.77 : x
  2. Step 2: Convert to fraction form
    83,621.30/115,403.09 = 47,322.77/x
  3. Step 3: Cross multiply
    83,621.30x = 115,403.09 × 47,322.77
  4. Step 4: Simplify right side
    83,621.30x = 5,461,193,937.25
  5. Step 5: Solve for x
    x = 5,461,193,937.25/83,621.30
  6. Step 6: Final answer
    x = 65,308.64

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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.