Home / 74,637.05-102,999.78-40,645.68

Finding the Fourth Proportional to 74,637.05, 102,999.78 and 40,645.68

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Solution

The fourth proportional to 74,637.05, 102,999.78 and 40,645.68 is: 56,091.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,637.05 : 102,999.78 = 40,645.68 : x
  2. Step 2: Convert to fraction form
    74,637.05/102,999.78 = 40,645.68/x
  3. Step 3: Cross multiply
    74,637.05x = 102,999.78 × 40,645.68
  4. Step 4: Simplify right side
    74,637.05x = 4,186,496,097.95
  5. Step 5: Solve for x
    x = 4,186,496,097.95/74,637.05
  6. Step 6: Final answer
    x = 56,091.40

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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.