Home / 66,322,368-99,443,029.32-31,789,336.68

Finding the Fourth Proportional to 66,322,368, 99,443,029.32 and 31,789,336.68

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Solution

The fourth proportional to 66,322,368, 99,443,029.32 and 31,789,336.68 is: 47,664,581.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,322,368 : 99,443,029.32 = 31,789,336.68 : x
  2. Step 2: Convert to fraction form
    66,322,368/99,443,029.32 = 31,789,336.68/x
  3. Step 3: Cross multiply
    66,322,368x = 99,443,029.32 × 31,789,336.68
  4. Step 4: Simplify right side
    66,322,368x = 3,161,227,939,532,591
  5. Step 5: Solve for x
    x = 3,161,227,939,532,591/66,322,368
  6. Step 6: Final answer
    x = 47,664,581.87

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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.