Home / 77,053,861.75-115,569,114.42-20,971,155.64

Finding the Fourth Proportional to 77,053,861.75, 115,569,114.42 and 20,971,155.64

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Solution

The fourth proportional to 77,053,861.75, 115,569,114.42 and 20,971,155.64 is: 31,453,555.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,053,861.75 : 115,569,114.42 = 20,971,155.64 : x
  2. Step 2: Convert to fraction form
    77,053,861.75/115,569,114.42 = 20,971,155.64/x
  3. Step 3: Cross multiply
    77,053,861.75x = 115,569,114.42 × 20,971,155.64
  4. Step 4: Simplify right side
    77,053,861.75x = 2,423,617,885,596,817
  5. Step 5: Solve for x
    x = 2,423,617,885,596,817/77,053,861.75
  6. Step 6: Final answer
    x = 31,453,555.09

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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.