Home / 72,403.47-108,605.31-30,260.49

Finding the Fourth Proportional to 72,403.47, 108,605.31 and 30,260.49

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Solution

The fourth proportional to 72,403.47, 108,605.31 and 30,260.49 is: 45,390.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,403.47 : 108,605.31 = 30,260.49 : x
  2. Step 2: Convert to fraction form
    72,403.47/108,605.31 = 30,260.49/x
  3. Step 3: Cross multiply
    72,403.47x = 108,605.31 × 30,260.49
  4. Step 4: Simplify right side
    72,403.47x = 3,286,449,376.46
  5. Step 5: Solve for x
    x = 3,286,449,376.46/72,403.47
  6. Step 6: Final answer
    x = 45,390.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.