Home / 52,143.21-78,214.80-45,102.30

Finding the Fourth Proportional to 52,143.21, 78,214.80 and 45,102.30

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Solution

The fourth proportional to 52,143.21, 78,214.80 and 45,102.30 is: 67,653.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,143.21 : 78,214.80 = 45,102.30 : x
  2. Step 2: Convert to fraction form
    52,143.21/78,214.80 = 45,102.30/x
  3. Step 3: Cross multiply
    52,143.21x = 78,214.80 × 45,102.30
  4. Step 4: Simplify right side
    52,143.21x = 3,527,667,374.04
  5. Step 5: Solve for x
    x = 3,527,667,374.04/52,143.21
  6. Step 6: Final answer
    x = 67,653.44

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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.