Home / 74,134.63-102,306-40,143.52

Finding the Fourth Proportional to 74,134.63, 102,306 and 40,143.52

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Solution

The fourth proportional to 74,134.63, 102,306 and 40,143.52 is: 55,398.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,134.63 : 102,306 = 40,143.52 : x
  2. Step 2: Convert to fraction form
    74,134.63/102,306 = 40,143.52/x
  3. Step 3: Cross multiply
    74,134.63x = 102,306 × 40,143.52
  4. Step 4: Simplify right side
    74,134.63x = 4,106,922,957.12
  5. Step 5: Solve for x
    x = 4,106,922,957.12/74,134.63
  6. Step 6: Final answer
    x = 55,398.17

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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.