Home / 76,921.19-106,156.58-42,936.31

Finding the Fourth Proportional to 76,921.19, 106,156.58 and 42,936.31

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Solution

The fourth proportional to 76,921.19, 106,156.58 and 42,936.31 is: 59,255.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,921.19 : 106,156.58 = 42,936.31 : x
  2. Step 2: Convert to fraction form
    76,921.19/106,156.58 = 42,936.31/x
  3. Step 3: Cross multiply
    76,921.19x = 106,156.58 × 42,936.31
  4. Step 4: Simplify right side
    76,921.19x = 4,557,971,347.35
  5. Step 5: Solve for x
    x = 4,557,971,347.35/76,921.19
  6. Step 6: Final answer
    x = 59,255.08

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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.