Home / 76,640.29-105,772.80-46,424.72

Finding the Fourth Proportional to 76,640.29, 105,772.80 and 46,424.72

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Solution

The fourth proportional to 76,640.29, 105,772.80 and 46,424.72 is: 64,071.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,640.29 : 105,772.80 = 46,424.72 : x
  2. Step 2: Convert to fraction form
    76,640.29/105,772.80 = 46,424.72/x
  3. Step 3: Cross multiply
    76,640.29x = 105,772.80 × 46,424.72
  4. Step 4: Simplify right side
    76,640.29x = 4,910,472,623.62
  5. Step 5: Solve for x
    x = 4,910,472,623.62/76,640.29
  6. Step 6: Final answer
    x = 64,071.69

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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.