Home / 74,155.68-102,342.04-42,329.28

Finding the Fourth Proportional to 74,155.68, 102,342.04 and 42,329.28

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Solution

The fourth proportional to 74,155.68, 102,342.04 and 42,329.28 is: 58,418.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,155.68 : 102,342.04 = 42,329.28 : x
  2. Step 2: Convert to fraction form
    74,155.68/102,342.04 = 42,329.28/x
  3. Step 3: Cross multiply
    74,155.68x = 102,342.04 × 42,329.28
  4. Step 4: Simplify right side
    74,155.68x = 4,332,064,866.93
  5. Step 5: Solve for x
    x = 4,332,064,866.93/74,155.68
  6. Step 6: Final answer
    x = 58,418.52

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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.