Home / 74,136.13-102,308.07-40,145.02

Finding the Fourth Proportional to 74,136.13, 102,308.07 and 40,145.02

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Solution

The fourth proportional to 74,136.13, 102,308.07 and 40,145.02 is: 55,400.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,136.13 : 102,308.07 = 40,145.02 : x
  2. Step 2: Convert to fraction form
    74,136.13/102,308.07 = 40,145.02/x
  3. Step 3: Cross multiply
    74,136.13x = 102,308.07 × 40,145.02
  4. Step 4: Simplify right side
    74,136.13x = 4,107,159,516.31
  5. Step 5: Solve for x
    x = 4,107,159,516.31/74,136.13
  6. Step 6: Final answer
    x = 55,400.24

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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.