Home / 70,322,946.78-105,488,406-21,807,697.89

Finding the Fourth Proportional to 70,322,946.78, 105,488,406 and 21,807,697.89

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Solution

The fourth proportional to 70,322,946.78, 105,488,406 and 21,807,697.89 is: 32,712,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,322,946.78 : 105,488,406 = 21,807,697.89 : x
  2. Step 2: Convert to fraction form
    70,322,946.78/105,488,406 = 21,807,697.89/x
  3. Step 3: Cross multiply
    70,322,946.78x = 105,488,406 × 21,807,697.89
  4. Step 4: Simplify right side
    70,322,946.78x = 2,300,459,288,747,767
  5. Step 5: Solve for x
    x = 2,300,459,288,747,767/70,322,946.78
  6. Step 6: Final answer
    x = 32,712,782.87

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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.