Home / 78,237.37-117,370.65-35,545.79

Finding the Fourth Proportional to 78,237.37, 117,370.65 and 35,545.79

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Solution

The fourth proportional to 78,237.37, 117,370.65 and 35,545.79 is: 53,325.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,237.37 : 117,370.65 = 35,545.79 : x
  2. Step 2: Convert to fraction form
    78,237.37/117,370.65 = 35,545.79/x
  3. Step 3: Cross multiply
    78,237.37x = 117,370.65 × 35,545.79
  4. Step 4: Simplify right side
    78,237.37x = 4,172,032,005.91
  5. Step 5: Solve for x
    x = 4,172,032,005.91/78,237.37
  6. Step 6: Final answer
    x = 53,325.31

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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.