Home / 64,610.72-89,125.60-40,369.64

Finding the Fourth Proportional to 64,610.72, 89,125.60 and 40,369.64

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Solution

The fourth proportional to 64,610.72, 89,125.60 and 40,369.64 is: 55,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,610.72 : 89,125.60 = 40,369.64 : x
  2. Step 2: Convert to fraction form
    64,610.72/89,125.60 = 40,369.64/x
  3. Step 3: Cross multiply
    64,610.72x = 89,125.60 × 40,369.64
  4. Step 4: Simplify right side
    64,610.72x = 3,597,968,386.78
  5. Step 5: Solve for x
    x = 3,597,968,386.78/64,610.72
  6. Step 6: Final answer
    x = 55,686.86

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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.