Home / 66,521,669.60-99,773,173.20-21,088,056.80

Finding the Fourth Proportional to 66,521,669.60, 99,773,173.20 and 21,088,056.80

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Solution

The fourth proportional to 66,521,669.60, 99,773,173.20 and 21,088,056.80 is: 31,629,127.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,521,669.60 : 99,773,173.20 = 21,088,056.80 : x
  2. Step 2: Convert to fraction form
    66,521,669.60/99,773,173.20 = 21,088,056.80/x
  3. Step 3: Cross multiply
    66,521,669.60x = 99,773,173.20 × 21,088,056.80
  4. Step 4: Simplify right side
    66,521,669.60x = 2,104,022,343,557,838
  5. Step 5: Solve for x
    x = 2,104,022,343,557,838/66,521,669.60
  6. Step 6: Final answer
    x = 31,629,127.11

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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.