Home / 68,849,608.64-103,285,619.36-20,332,368.32

Finding the Fourth Proportional to 68,849,608.64, 103,285,619.36 and 20,332,368.32

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Solution

The fourth proportional to 68,849,608.64, 103,285,619.36 and 20,332,368.32 is: 30,501,861.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,849,608.64 : 103,285,619.36 = 20,332,368.32 : x
  2. Step 2: Convert to fraction form
    68,849,608.64/103,285,619.36 = 20,332,368.32/x
  3. Step 3: Cross multiply
    68,849,608.64x = 103,285,619.36 × 20,332,368.32
  4. Step 4: Simplify right side
    68,849,608.64x = 2,100,041,254,986,842.75
  5. Step 5: Solve for x
    x = 2,100,041,254,986,842.75/68,849,608.64
  6. Step 6: Final answer
    x = 30,501,861.91

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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.