Home / 74,417.68-111,632.28-21,108.76

Finding the Fourth Proportional to 74,417.68, 111,632.28 and 21,108.76

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Solution

The fourth proportional to 74,417.68, 111,632.28 and 21,108.76 is: 31,664.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,417.68 : 111,632.28 = 21,108.76 : x
  2. Step 2: Convert to fraction form
    74,417.68/111,632.28 = 21,108.76/x
  3. Step 3: Cross multiply
    74,417.68x = 111,632.28 × 21,108.76
  4. Step 4: Simplify right side
    74,417.68x = 2,356,419,006.77
  5. Step 5: Solve for x
    x = 2,356,419,006.77/74,417.68
  6. Step 6: Final answer
    x = 31,664.77

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1.5x scale

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.