Home / 87,345.20-131,017.80-55,852.40

Finding the Fourth Proportional to 87,345.20, 131,017.80 and 55,852.40

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Solution

The fourth proportional to 87,345.20, 131,017.80 and 55,852.40 is: 83,778.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,345.20 : 131,017.80 = 55,852.40 : x
  2. Step 2: Convert to fraction form
    87,345.20/131,017.80 = 55,852.40/x
  3. Step 3: Cross multiply
    87,345.20x = 131,017.80 × 55,852.40
  4. Step 4: Simplify right side
    87,345.20x = 7,317,658,572.72
  5. Step 5: Solve for x
    x = 7,317,658,572.72/87,345.20
  6. Step 6: Final answer
    x = 83,778.60

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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.