Home / 76,830.37-106,018.13-42,835.66

Finding the Fourth Proportional to 76,830.37, 106,018.13 and 42,835.66

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Solution

The fourth proportional to 76,830.37, 106,018.13 and 42,835.66 is: 59,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,830.37 : 106,018.13 = 42,835.66 : x
  2. Step 2: Convert to fraction form
    76,830.37/106,018.13 = 42,835.66/x
  3. Step 3: Cross multiply
    76,830.37x = 106,018.13 × 42,835.66
  4. Step 4: Simplify right side
    76,830.37x = 4,541,356,412.56
  5. Step 5: Solve for x
    x = 4,541,356,412.56/76,830.37
  6. Step 6: Final answer
    x = 59,108.87

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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.