Home / 66,437,812.20-99,670,715.10-28,079,581.80

Finding the Fourth Proportional to 66,437,812.20, 99,670,715.10 and 28,079,581.80

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Solution

The fourth proportional to 66,437,812.20, 99,670,715.10 and 28,079,581.80 is: 42,125,288.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,437,812.20 : 99,670,715.10 = 28,079,581.80 : x
  2. Step 2: Convert to fraction form
    66,437,812.20/99,670,715.10 = 28,079,581.80/x
  3. Step 3: Cross multiply
    66,437,812.20x = 99,670,715.10 × 28,079,581.80
  4. Step 4: Simplify right side
    66,437,812.20x = 2,798,711,997,714,945
  5. Step 5: Solve for x
    x = 2,798,711,997,714,945/66,437,812.20
  6. Step 6: Final answer
    x = 42,125,288.37

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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.