Home / 76,857.54-106,064.02-42,864.90

Finding the Fourth Proportional to 76,857.54, 106,064.02 and 42,864.90

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Solution

The fourth proportional to 76,857.54, 106,064.02 and 42,864.90 is: 59,153.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,857.54 : 106,064.02 = 42,864.90 : x
  2. Step 2: Convert to fraction form
    76,857.54/106,064.02 = 42,864.90/x
  3. Step 3: Cross multiply
    76,857.54x = 106,064.02 × 42,864.90
  4. Step 4: Simplify right side
    76,857.54x = 4,546,423,080.58
  5. Step 5: Solve for x
    x = 4,546,423,080.58/76,857.54
  6. Step 6: Final answer
    x = 59,153.90

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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.