Home / 74,039.12-102,173.88-40,505.12

Finding the Fourth Proportional to 74,039.12, 102,173.88 and 40,505.12

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Solution

The fourth proportional to 74,039.12, 102,173.88 and 40,505.12 is: 55,897.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,039.12 : 102,173.88 = 40,505.12 : x
  2. Step 2: Convert to fraction form
    74,039.12/102,173.88 = 40,505.12/x
  3. Step 3: Cross multiply
    74,039.12x = 102,173.88 × 40,505.12
  4. Step 4: Simplify right side
    74,039.12x = 4,138,565,270.27
  5. Step 5: Solve for x
    x = 4,138,565,270.27/74,039.12
  6. Step 6: Final answer
    x = 55,897.01

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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.