Home / 76,857.21-106,062.69-42,865.74

Finding the Fourth Proportional to 76,857.21, 106,062.69 and 42,865.74

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Solution

The fourth proportional to 76,857.21, 106,062.69 and 42,865.74 is: 59,154.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,857.21 : 106,062.69 = 42,865.74 : x
  2. Step 2: Convert to fraction form
    76,857.21/106,062.69 = 42,865.74/x
  3. Step 3: Cross multiply
    76,857.21x = 106,062.69 × 42,865.74
  4. Step 4: Simplify right side
    76,857.21x = 4,546,455,693.24
  5. Step 5: Solve for x
    x = 4,546,455,693.24/76,857.21
  6. Step 6: Final answer
    x = 59,154.58

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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.