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Finding the Fourth Proportional to 78,336.69, 108,078.87 and 44,341.80

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Solution

The fourth proportional to 78,336.69, 108,078.87 and 44,341.80 is: 61,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,336.69 : 108,078.87 = 44,341.80 : x
  2. Step 2: Convert to fraction form
    78,336.69/108,078.87 = 44,341.80/x
  3. Step 3: Cross multiply
    78,336.69x = 108,078.87 × 44,341.80
  4. Step 4: Simplify right side
    78,336.69x = 4,792,411,637.77
  5. Step 5: Solve for x
    x = 4,792,411,637.77/78,336.69
  6. Step 6: Final answer
    x = 61,177.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.