Home / 78,596.34-117,823.40-28,664.74

Finding the Fourth Proportional to 78,596.34, 117,823.40 and 28,664.74

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Solution

The fourth proportional to 78,596.34, 117,823.40 and 28,664.74 is: 42,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,596.34 : 117,823.40 = 28,664.74 : x
  2. Step 2: Convert to fraction form
    78,596.34/117,823.40 = 28,664.74/x
  3. Step 3: Cross multiply
    78,596.34x = 117,823.40 × 28,664.74
  4. Step 4: Simplify right side
    78,596.34x = 3,377,377,126.92
  5. Step 5: Solve for x
    x = 3,377,377,126.92/78,596.34
  6. Step 6: Final answer
    x = 42,971.18

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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.