Home / 64,728.24-89,319.28-36,045.72

Finding the Fourth Proportional to 64,728.24, 89,319.28 and 36,045.72

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Solution

The fourth proportional to 64,728.24, 89,319.28 and 36,045.72 is: 49,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,728.24 : 89,319.28 = 36,045.72 : x
  2. Step 2: Convert to fraction form
    64,728.24/89,319.28 = 36,045.72/x
  3. Step 3: Cross multiply
    64,728.24x = 89,319.28 × 36,045.72
  4. Step 4: Simplify right side
    64,728.24x = 3,219,577,757.48
  5. Step 5: Solve for x
    x = 3,219,577,757.48/64,728.24
  6. Step 6: Final answer
    x = 49,739.92

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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.