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Finding the Fourth Proportional to 92,782.92, 139,172.76 and 64,293.60

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Solution

The fourth proportional to 92,782.92, 139,172.76 and 64,293.60 is: 96,439.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,782.92 : 139,172.76 = 64,293.60 : x
  2. Step 2: Convert to fraction form
    92,782.92/139,172.76 = 64,293.60/x
  3. Step 3: Cross multiply
    92,782.92x = 139,172.76 × 64,293.60
  4. Step 4: Simplify right side
    92,782.92x = 8,947,917,762.34
  5. Step 5: Solve for x
    x = 8,947,917,762.34/92,782.92
  6. Step 6: Final answer
    x = 96,439.28

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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.