Home / 72,837.56-109,334.10-31,313.72

Finding the Fourth Proportional to 72,837.56, 109,334.10 and 31,313.72

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Solution

The fourth proportional to 72,837.56, 109,334.10 and 31,313.72 is: 47,004.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,837.56 : 109,334.10 = 31,313.72 : x
  2. Step 2: Convert to fraction form
    72,837.56/109,334.10 = 31,313.72/x
  3. Step 3: Cross multiply
    72,837.56x = 109,334.10 × 31,313.72
  4. Step 4: Simplify right side
    72,837.56x = 3,423,657,393.85
  5. Step 5: Solve for x
    x = 3,423,657,393.85/72,837.56
  6. Step 6: Final answer
    x = 47,004.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.