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Finding the Fourth Proportional to 78,755.36, 108,678.66 and 44,762.90

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Solution

The fourth proportional to 78,755.36, 108,678.66 and 44,762.90 is: 61,770.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,755.36 : 108,678.66 = 44,762.90 : x
  2. Step 2: Convert to fraction form
    78,755.36/108,678.66 = 44,762.90/x
  3. Step 3: Cross multiply
    78,755.36x = 108,678.66 × 44,762.90
  4. Step 4: Simplify right side
    78,755.36x = 4,864,771,989.71
  5. Step 5: Solve for x
    x = 4,864,771,989.71/78,755.36
  6. Step 6: Final answer
    x = 61,770.68

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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.