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Finding the Fourth Proportional to 45,009.88, 67,478.27 and 18,734.29

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Solution

The fourth proportional to 45,009.88, 67,478.27 and 18,734.29 is: 28,086.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,009.88 : 67,478.27 = 18,734.29 : x
  2. Step 2: Convert to fraction form
    45,009.88/67,478.27 = 18,734.29/x
  3. Step 3: Cross multiply
    45,009.88x = 67,478.27 × 18,734.29
  4. Step 4: Simplify right side
    45,009.88x = 1,264,157,216.51
  5. Step 5: Solve for x
    x = 1,264,157,216.51/45,009.88
  6. Step 6: Final answer
    x = 28,086.22

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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.