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Finding the Fourth Proportional to 61,665.37, 85,040.46 and 40,932.20

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Solution

The fourth proportional to 61,665.37, 85,040.46 and 40,932.20 is: 56,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,665.37 : 85,040.46 = 40,932.20 : x
  2. Step 2: Convert to fraction form
    61,665.37/85,040.46 = 40,932.20/x
  3. Step 3: Cross multiply
    61,665.37x = 85,040.46 × 40,932.20
  4. Step 4: Simplify right side
    61,665.37x = 3,480,893,116.81
  5. Step 5: Solve for x
    x = 3,480,893,116.81/61,665.37
  6. Step 6: Final answer
    x = 56,448.10

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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.