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Finding the Fourth Proportional to 72,114.28, 108,210.15 and 30,023.41

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Solution

The fourth proportional to 72,114.28, 108,210.15 and 30,023.41 is: 45,051.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,114.28 : 108,210.15 = 30,023.41 : x
  2. Step 2: Convert to fraction form
    72,114.28/108,210.15 = 30,023.41/x
  3. Step 3: Cross multiply
    72,114.28x = 108,210.15 × 30,023.41
  4. Step 4: Simplify right side
    72,114.28x = 3,248,837,820.02
  5. Step 5: Solve for x
    x = 3,248,837,820.02/72,114.28
  6. Step 6: Final answer
    x = 45,051.24

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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.