Home / 74,869.84-112,309.08-28,123.12

Finding the Fourth Proportional to 74,869.84, 112,309.08 and 28,123.12

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Solution

The fourth proportional to 74,869.84, 112,309.08 and 28,123.12 is: 42,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,869.84 : 112,309.08 = 28,123.12 : x
  2. Step 2: Convert to fraction form
    74,869.84/112,309.08 = 28,123.12/x
  3. Step 3: Cross multiply
    74,869.84x = 112,309.08 × 28,123.12
  4. Step 4: Simplify right side
    74,869.84x = 3,158,481,733.93
  5. Step 5: Solve for x
    x = 3,158,481,733.93/74,869.84
  6. Step 6: Final answer
    x = 42,186.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.