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Finding the Fourth Proportional to 78,154.12, 107,850.18 and 44,620.12

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Solution

The fourth proportional to 78,154.12, 107,850.18 and 44,620.12 is: 61,574.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,154.12 : 107,850.18 = 44,620.12 : x
  2. Step 2: Convert to fraction form
    78,154.12/107,850.18 = 44,620.12/x
  3. Step 3: Cross multiply
    78,154.12x = 107,850.18 × 44,620.12
  4. Step 4: Simplify right side
    78,154.12x = 4,812,287,973.62
  5. Step 5: Solve for x
    x = 4,812,287,973.62/78,154.12
  6. Step 6: Final answer
    x = 61,574.34

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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.