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Finding the Fourth Proportional to 54,015.40, 80,925.90 and 45,656.20

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Solution

The fourth proportional to 54,015.40, 80,925.90 and 45,656.20 is: 68,402.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,015.40 : 80,925.90 = 45,656.20 : x
  2. Step 2: Convert to fraction form
    54,015.40/80,925.90 = 45,656.20/x
  3. Step 3: Cross multiply
    54,015.40x = 80,925.90 × 45,656.20
  4. Step 4: Simplify right side
    54,015.40x = 3,694,769,075.58
  5. Step 5: Solve for x
    x = 3,694,769,075.58/54,015.40
  6. Step 6: Final answer
    x = 68,402.14

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1.5x scale

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.