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Finding the Fourth Proportional to 72,089.86, 108,088.14 and 29,998.90

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Solution

The fourth proportional to 72,089.86, 108,088.14 and 29,998.90 is: 44,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,089.86 : 108,088.14 = 29,998.90 : x
  2. Step 2: Convert to fraction form
    72,089.86/108,088.14 = 29,998.90/x
  3. Step 3: Cross multiply
    72,089.86x = 108,088.14 × 29,998.90
  4. Step 4: Simplify right side
    72,089.86x = 3,242,525,303.05
  5. Step 5: Solve for x
    x = 3,242,525,303.05/72,089.86
  6. Step 6: Final answer
    x = 44,978.94

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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.