Home / 101,917.89-140,624.04-61,630.81

Finding the Fourth Proportional to 101,917.89, 140,624.04 and 61,630.81

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Solution

The fourth proportional to 101,917.89, 140,624.04 and 61,630.81 is: 85,036.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,917.89 : 140,624.04 = 61,630.81 : x
  2. Step 2: Convert to fraction form
    101,917.89/140,624.04 = 61,630.81/x
  3. Step 3: Cross multiply
    101,917.89x = 140,624.04 × 61,630.81
  4. Step 4: Simplify right side
    101,917.89x = 8,666,773,139.11
  5. Step 5: Solve for x
    x = 8,666,773,139.11/101,917.89
  6. Step 6: Final answer
    x = 85,036.82

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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.