Home / 72,028.08-99,403.74-40,203.18

Finding the Fourth Proportional to 72,028.08, 99,403.74 and 40,203.18

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Solution

The fourth proportional to 72,028.08, 99,403.74 and 40,203.18 is: 55,483.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,028.08 : 99,403.74 = 40,203.18 : x
  2. Step 2: Convert to fraction form
    72,028.08/99,403.74 = 40,203.18/x
  3. Step 3: Cross multiply
    72,028.08x = 99,403.74 × 40,203.18
  4. Step 4: Simplify right side
    72,028.08x = 3,996,346,451.89
  5. Step 5: Solve for x
    x = 3,996,346,451.89/72,028.08
  6. Step 6: Final answer
    x = 55,483.17

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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.