Home / 74,136.63-102,308.76-40,145.52

Finding the Fourth Proportional to 74,136.63, 102,308.76 and 40,145.52

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Solution

The fourth proportional to 74,136.63, 102,308.76 and 40,145.52 is: 55,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,136.63 : 102,308.76 = 40,145.52 : x
  2. Step 2: Convert to fraction form
    74,136.63/102,308.76 = 40,145.52/x
  3. Step 3: Cross multiply
    74,136.63x = 102,308.76 × 40,145.52
  4. Step 4: Simplify right side
    74,136.63x = 4,107,238,370.76
  5. Step 5: Solve for x
    x = 4,107,238,370.76/74,136.63
  6. Step 6: Final answer
    x = 55,400.93

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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.