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Finding the Fourth Proportional to 78,298.92, 117,289.80 and 62,530.92

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Solution

The fourth proportional to 78,298.92, 117,289.80 and 62,530.92 is: 93,669.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,298.92 : 117,289.80 = 62,530.92 : x
  2. Step 2: Convert to fraction form
    78,298.92/117,289.80 = 62,530.92/x
  3. Step 3: Cross multiply
    78,298.92x = 117,289.80 × 62,530.92
  4. Step 4: Simplify right side
    78,298.92x = 7,334,239,100.62
  5. Step 5: Solve for x
    x = 7,334,239,100.62/78,298.92
  6. Step 6: Final answer
    x = 93,669.74

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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.