Home / 51,045.20-76,625.40-30,280.40

Finding the Fourth Proportional to 51,045.20, 76,625.40 and 30,280.40

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Solution

The fourth proportional to 51,045.20, 76,625.40 and 30,280.40 is: 45,454.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,045.20 : 76,625.40 = 30,280.40 : x
  2. Step 2: Convert to fraction form
    51,045.20/76,625.40 = 30,280.40/x
  3. Step 3: Cross multiply
    51,045.20x = 76,625.40 × 30,280.40
  4. Step 4: Simplify right side
    51,045.20x = 2,320,247,762.16
  5. Step 5: Solve for x
    x = 2,320,247,762.16/51,045.20
  6. Step 6: Final answer
    x = 45,454.77

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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.