Home / 74,076.40-102,225.70-40,084.88

Finding the Fourth Proportional to 74,076.40, 102,225.70 and 40,084.88

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Solution

The fourth proportional to 74,076.40, 102,225.70 and 40,084.88 is: 55,317.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,076.40 : 102,225.70 = 40,084.88 : x
  2. Step 2: Convert to fraction form
    74,076.40/102,225.70 = 40,084.88/x
  3. Step 3: Cross multiply
    74,076.40x = 102,225.70 × 40,084.88
  4. Step 4: Simplify right side
    74,076.40x = 4,097,704,917.42
  5. Step 5: Solve for x
    x = 4,097,704,917.42/74,076.40
  6. Step 6: Final answer
    x = 55,317.28

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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.