Home / 65,712.17-90,670.10-40,224.30

Finding the Fourth Proportional to 65,712.17, 90,670.10 and 40,224.30

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Solution

The fourth proportional to 65,712.17, 90,670.10 and 40,224.30 is: 55,501.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,712.17 : 90,670.10 = 40,224.30 : x
  2. Step 2: Convert to fraction form
    65,712.17/90,670.10 = 40,224.30/x
  3. Step 3: Cross multiply
    65,712.17x = 90,670.10 × 40,224.30
  4. Step 4: Simplify right side
    65,712.17x = 3,647,141,102.31
  5. Step 5: Solve for x
    x = 3,647,141,102.31/65,712.17
  6. Step 6: Final answer
    x = 55,501.76

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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.