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Finding the Fourth Proportional to 78,503.94, 108,366.81 and 48,301.62

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Solution

The fourth proportional to 78,503.94, 108,366.81 and 48,301.62 is: 66,675.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,503.94 : 108,366.81 = 48,301.62 : x
  2. Step 2: Convert to fraction form
    78,503.94/108,366.81 = 48,301.62/x
  3. Step 3: Cross multiply
    78,503.94x = 108,366.81 × 48,301.62
  4. Step 4: Simplify right side
    78,503.94x = 5,234,292,477.23
  5. Step 5: Solve for x
    x = 5,234,292,477.23/78,503.94
  6. Step 6: Final answer
    x = 66,675.54

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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.