Home / 74,943.51-112,415.28-20,906.08

Finding the Fourth Proportional to 74,943.51, 112,415.28 and 20,906.08

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Solution

The fourth proportional to 74,943.51, 112,415.28 and 20,906.08 is: 31,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,943.51 : 112,415.28 = 20,906.08 : x
  2. Step 2: Convert to fraction form
    74,943.51/112,415.28 = 20,906.08/x
  3. Step 3: Cross multiply
    74,943.51x = 112,415.28 × 20,906.08
  4. Step 4: Simplify right side
    74,943.51x = 2,350,163,109.80
  5. Step 5: Solve for x
    x = 2,350,163,109.80/74,943.51
  6. Step 6: Final answer
    x = 31,359.13

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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.