Home / 78,555.74-117,833.62-64,675.58

Finding the Fourth Proportional to 78,555.74, 117,833.62 and 64,675.58

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Solution

The fourth proportional to 78,555.74, 117,833.62 and 64,675.58 is: 97,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,555.74 : 117,833.62 = 64,675.58 : x
  2. Step 2: Convert to fraction form
    78,555.74/117,833.62 = 64,675.58/x
  3. Step 3: Cross multiply
    78,555.74x = 117,833.62 × 64,675.58
  4. Step 4: Simplify right side
    78,555.74x = 7,620,957,717.00
  5. Step 5: Solve for x
    x = 7,620,957,717.00/78,555.74
  6. Step 6: Final answer
    x = 97,013.38

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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.