Home / 87,430.24-120,647.52-51,618.40

Finding the Fourth Proportional to 87,430.24, 120,647.52 and 51,618.40

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Solution

The fourth proportional to 87,430.24, 120,647.52 and 51,618.40 is: 71,229.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,430.24 : 120,647.52 = 51,618.40 : x
  2. Step 2: Convert to fraction form
    87,430.24/120,647.52 = 51,618.40/x
  3. Step 3: Cross multiply
    87,430.24x = 120,647.52 × 51,618.40
  4. Step 4: Simplify right side
    87,430.24x = 6,227,631,946.37
  5. Step 5: Solve for x
    x = 6,227,631,946.37/87,430.24
  6. Step 6: Final answer
    x = 71,229.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.