Home / 72,401.12-99,917.64-40,580.28

Finding the Fourth Proportional to 72,401.12, 99,917.64 and 40,580.28

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Solution

The fourth proportional to 72,401.12, 99,917.64 and 40,580.28 is: 56,003.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,401.12 : 99,917.64 = 40,580.28 : x
  2. Step 2: Convert to fraction form
    72,401.12/99,917.64 = 40,580.28/x
  3. Step 3: Cross multiply
    72,401.12x = 99,917.64 × 40,580.28
  4. Step 4: Simplify right side
    72,401.12x = 4,054,685,808.14
  5. Step 5: Solve for x
    x = 4,054,685,808.14/72,401.12
  6. Step 6: Final answer
    x = 56,003.08

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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.