Home / 61,620.64-84,997.34-40,401.28

Finding the Fourth Proportional to 61,620.64, 84,997.34 and 40,401.28

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Solution

The fourth proportional to 61,620.64, 84,997.34 and 40,401.28 is: 55,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,620.64 : 84,997.34 = 40,401.28 : x
  2. Step 2: Convert to fraction form
    61,620.64/84,997.34 = 40,401.28/x
  3. Step 3: Cross multiply
    61,620.64x = 84,997.34 × 40,401.28
  4. Step 4: Simplify right side
    61,620.64x = 3,434,001,332.60
  5. Step 5: Solve for x
    x = 3,434,001,332.60/61,620.64
  6. Step 6: Final answer
    x = 55,728.10

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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.