Home / 72,016.95-99,378.25-39,745.14

Finding the Fourth Proportional to 72,016.95, 99,378.25 and 39,745.14

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Solution

The fourth proportional to 72,016.95, 99,378.25 and 39,745.14 is: 54,845.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,016.95 : 99,378.25 = 39,745.14 : x
  2. Step 2: Convert to fraction form
    72,016.95/99,378.25 = 39,745.14/x
  3. Step 3: Cross multiply
    72,016.95x = 99,378.25 × 39,745.14
  4. Step 4: Simplify right side
    72,016.95x = 3,949,802,459.21
  5. Step 5: Solve for x
    x = 3,949,802,459.21/72,016.95
  6. Step 6: Final answer
    x = 54,845.46

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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.