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Finding the Fourth Proportional to 72,700.60, 109,050.54 and 19,392.46

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Solution

The fourth proportional to 72,700.60, 109,050.54 and 19,392.46 is: 29,088.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,700.60 : 109,050.54 = 19,392.46 : x
  2. Step 2: Convert to fraction form
    72,700.60/109,050.54 = 19,392.46/x
  3. Step 3: Cross multiply
    72,700.60x = 109,050.54 × 19,392.46
  4. Step 4: Simplify right side
    72,700.60x = 2,114,758,234.93
  5. Step 5: Solve for x
    x = 2,114,758,234.93/72,700.60
  6. Step 6: Final answer
    x = 29,088.59

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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.