Home / 74,428.30-102,708.93-40,435.30

Finding the Fourth Proportional to 74,428.30, 102,708.93 and 40,435.30

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Solution

The fourth proportional to 74,428.30, 102,708.93 and 40,435.30 is: 55,799.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,428.30 : 102,708.93 = 40,435.30 : x
  2. Step 2: Convert to fraction form
    74,428.30/102,708.93 = 40,435.30/x
  3. Step 3: Cross multiply
    74,428.30x = 102,708.93 × 40,435.30
  4. Step 4: Simplify right side
    74,428.30x = 4,153,066,397.23
  5. Step 5: Solve for x
    x = 4,153,066,397.23/74,428.30
  6. Step 6: Final answer
    x = 55,799.56

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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.