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Finding the Fourth Proportional to 60,432,640.80, 90,456,067.80 and 47,678,056.80

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Solution

The fourth proportional to 60,432,640.80, 90,456,067.80 and 47,678,056.80 is: 71,364,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,432,640.80 : 90,456,067.80 = 47,678,056.80 : x
  2. Step 2: Convert to fraction form
    60,432,640.80/90,456,067.80 = 47,678,056.80/x
  3. Step 3: Cross multiply
    60,432,640.80x = 90,456,067.80 × 47,678,056.80
  4. Step 4: Simplify right side
    60,432,640.80x = 4,312,769,538,473,050.50
  5. Step 5: Solve for x
    x = 4,312,769,538,473,050.50/60,432,640.80
  6. Step 6: Final answer
    x = 71,364,902.83

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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.