Home / 67,154,429.60-100,731,644.40-21,720,816.80

Finding the Fourth Proportional to 67,154,429.60, 100,731,644.40 and 21,720,816.80

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Solution

The fourth proportional to 67,154,429.60, 100,731,644.40 and 21,720,816.80 is: 32,581,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,154,429.60 : 100,731,644.40 = 21,720,816.80 : x
  2. Step 2: Convert to fraction form
    67,154,429.60/100,731,644.40 = 21,720,816.80/x
  3. Step 3: Cross multiply
    67,154,429.60x = 100,731,644.40 × 21,720,816.80
  4. Step 4: Simplify right side
    67,154,429.60x = 2,187,973,593,975,146
  5. Step 5: Solve for x
    x = 2,187,973,593,975,146/67,154,429.60
  6. Step 6: Final answer
    x = 32,581,225.20

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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.