Home / 87,135.40-130,530.30-51,970.60

Finding the Fourth Proportional to 87,135.40, 130,530.30 and 51,970.60

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Solution

The fourth proportional to 87,135.40, 130,530.30 and 51,970.60 is: 77,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,135.40 : 130,530.30 = 51,970.60 : x
  2. Step 2: Convert to fraction form
    87,135.40/130,530.30 = 51,970.60/x
  3. Step 3: Cross multiply
    87,135.40x = 130,530.30 × 51,970.60
  4. Step 4: Simplify right side
    87,135.40x = 6,783,738,009.18
  5. Step 5: Solve for x
    x = 6,783,738,009.18/87,135.40
  6. Step 6: Final answer
    x = 77,852.84

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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.