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Finding the Fourth Proportional to 75,112.51, 112,661.47 and 19,708.51

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Solution

The fourth proportional to 75,112.51, 112,661.47 and 19,708.51 is: 29,560.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,112.51 : 112,661.47 = 19,708.51 : x
  2. Step 2: Convert to fraction form
    75,112.51/112,661.47 = 19,708.51/x
  3. Step 3: Cross multiply
    75,112.51x = 112,661.47 × 19,708.51
  4. Step 4: Simplify right side
    75,112.51x = 2,220,389,708.11
  5. Step 5: Solve for x
    x = 2,220,389,708.11/75,112.51
  6. Step 6: Final answer
    x = 29,560.85

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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.