Home / 80,460.20-120,690.30-52,607.40

Finding the Fourth Proportional to 80,460.20, 120,690.30 and 52,607.40

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Solution

The fourth proportional to 80,460.20, 120,690.30 and 52,607.40 is: 78,911.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,460.20 : 120,690.30 = 52,607.40 : x
  2. Step 2: Convert to fraction form
    80,460.20/120,690.30 = 52,607.40/x
  3. Step 3: Cross multiply
    80,460.20x = 120,690.30 × 52,607.40
  4. Step 4: Simplify right side
    80,460.20x = 6,349,202,888.22
  5. Step 5: Solve for x
    x = 6,349,202,888.22/80,460.20
  6. Step 6: Final answer
    x = 78,911.10

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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.