Home / 76,879.64-106,094.04-42,890.36

Finding the Fourth Proportional to 76,879.64, 106,094.04 and 42,890.36

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Solution

The fourth proportional to 76,879.64, 106,094.04 and 42,890.36 is: 59,188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,879.64 : 106,094.04 = 42,890.36 : x
  2. Step 2: Convert to fraction form
    76,879.64/106,094.04 = 42,890.36/x
  3. Step 3: Cross multiply
    76,879.64x = 106,094.04 × 42,890.36
  4. Step 4: Simplify right side
    76,879.64x = 4,550,411,569.45
  5. Step 5: Solve for x
    x = 4,550,411,569.45/76,879.64
  6. Step 6: Final answer
    x = 59,188.77

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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.