Home / 52,000.20-78,000.30-39,558.60

Finding the Fourth Proportional to 52,000.20, 78,000.30 and 39,558.60

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Solution

The fourth proportional to 52,000.20, 78,000.30 and 39,558.60 is: 59,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,000.20 : 78,000.30 = 39,558.60 : x
  2. Step 2: Convert to fraction form
    52,000.20/78,000.30 = 39,558.60/x
  3. Step 3: Cross multiply
    52,000.20x = 78,000.30 × 39,558.60
  4. Step 4: Simplify right side
    52,000.20x = 3,085,582,667.58
  5. Step 5: Solve for x
    x = 3,085,582,667.58/52,000.20
  6. Step 6: Final answer
    x = 59,337.90

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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.