Home / 72,140.06-99,551.43-40,309.22

Finding the Fourth Proportional to 72,140.06, 99,551.43 and 40,309.22

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Solution

The fourth proportional to 72,140.06, 99,551.43 and 40,309.22 is: 55,625.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,140.06 : 99,551.43 = 40,309.22 : x
  2. Step 2: Convert to fraction form
    72,140.06/99,551.43 = 40,309.22/x
  3. Step 3: Cross multiply
    72,140.06x = 99,551.43 × 40,309.22
  4. Step 4: Simplify right side
    72,140.06x = 4,012,840,742.06
  5. Step 5: Solve for x
    x = 4,012,840,742.06/72,140.06
  6. Step 6: Final answer
    x = 55,625.69

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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.