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Finding the Fourth Proportional to 101,360.80, 152,041.20 and 31,240.12

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Solution

The fourth proportional to 101,360.80, 152,041.20 and 31,240.12 is: 46,860.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,360.80 : 152,041.20 = 31,240.12 : x
  2. Step 2: Convert to fraction form
    101,360.80/152,041.20 = 31,240.12/x
  3. Step 3: Cross multiply
    101,360.80x = 152,041.20 × 31,240.12
  4. Step 4: Simplify right side
    101,360.80x = 4,749,785,332.94
  5. Step 5: Solve for x
    x = 4,749,785,332.94/101,360.80
  6. Step 6: Final answer
    x = 46,860.18

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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.