Home / 61,664.37-85,039.08-40,931.20

Finding the Fourth Proportional to 61,664.37, 85,039.08 and 40,931.20

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Solution

The fourth proportional to 61,664.37, 85,039.08 and 40,931.20 is: 56,446.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,664.37 : 85,039.08 = 40,931.20 : x
  2. Step 2: Convert to fraction form
    61,664.37/85,039.08 = 40,931.20/x
  3. Step 3: Cross multiply
    61,664.37x = 85,039.08 × 40,931.20
  4. Step 4: Simplify right side
    61,664.37x = 3,480,751,591.30
  5. Step 5: Solve for x
    x = 3,480,751,591.30/61,664.37
  6. Step 6: Final answer
    x = 56,446.72

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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.