Home / 86,904.80-119,936.40-51,076.88

Finding the Fourth Proportional to 86,904.80, 119,936.40 and 51,076.88

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Solution

The fourth proportional to 86,904.80, 119,936.40 and 51,076.88 is: 70,490.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,904.80 : 119,936.40 = 51,076.88 : x
  2. Step 2: Convert to fraction form
    86,904.80/119,936.40 = 51,076.88/x
  3. Step 3: Cross multiply
    86,904.80x = 119,936.40 × 51,076.88
  4. Step 4: Simplify right side
    86,904.80x = 6,125,977,110.43
  5. Step 5: Solve for x
    x = 6,125,977,110.43/86,904.80
  6. Step 6: Final answer
    x = 70,490.66

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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.