Home / 77,212,856.34-115,819,219.17-19,705,123.26

Finding the Fourth Proportional to 77,212,856.34, 115,819,219.17 and 19,705,123.26

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Solution

The fourth proportional to 77,212,856.34, 115,819,219.17 and 19,705,123.26 is: 29,557,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,212,856.34 : 115,819,219.17 = 19,705,123.26 : x
  2. Step 2: Convert to fraction form
    77,212,856.34/115,819,219.17 = 19,705,123.26/x
  3. Step 3: Cross multiply
    77,212,856.34x = 115,819,219.17 × 19,705,123.26
  4. Step 4: Simplify right side
    77,212,856.34x = 2,282,231,989,621,805
  5. Step 5: Solve for x
    x = 2,282,231,989,621,805/77,212,856.34
  6. Step 6: Final answer
    x = 29,557,668.21

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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.