Home / 78,731,315.64-108,525,494.52-53,908,576.20

Finding the Fourth Proportional to 78,731,315.64, 108,525,494.52 and 53,908,576.20

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Solution

The fourth proportional to 78,731,315.64, 108,525,494.52 and 53,908,576.20 is: 74,309,121.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,731,315.64 : 108,525,494.52 = 53,908,576.20 : x
  2. Step 2: Convert to fraction form
    78,731,315.64/108,525,494.52 = 53,908,576.20/x
  3. Step 3: Cross multiply
    78,731,315.64x = 108,525,494.52 × 53,908,576.20
  4. Step 4: Simplify right side
    78,731,315.64x = 5,850,454,890,974,103
  5. Step 5: Solve for x
    x = 5,850,454,890,974,103/78,731,315.64
  6. Step 6: Final answer
    x = 74,309,121.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.