Home / 78,964.15-118,465.68-55,636.15

Finding the Fourth Proportional to 78,964.15, 118,465.68 and 55,636.15

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Solution

The fourth proportional to 78,964.15, 118,465.68 and 55,636.15 is: 83,467.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,964.15 : 118,465.68 = 55,636.15 : x
  2. Step 2: Convert to fraction form
    78,964.15/118,465.68 = 55,636.15/x
  3. Step 3: Cross multiply
    78,964.15x = 118,465.68 × 55,636.15
  4. Step 4: Simplify right side
    78,964.15x = 6,590,974,342.33
  5. Step 5: Solve for x
    x = 6,590,974,342.33/78,964.15
  6. Step 6: Final answer
    x = 83,467.93

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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.