Home / 76,706.07-105,852.40-74,442.52

Finding the Fourth Proportional to 76,706.07, 105,852.40 and 74,442.52

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Solution

The fourth proportional to 76,706.07, 105,852.40 and 74,442.52 is: 102,728.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,706.07 : 105,852.40 = 74,442.52 : x
  2. Step 2: Convert to fraction form
    76,706.07/105,852.40 = 74,442.52/x
  3. Step 3: Cross multiply
    76,706.07x = 105,852.40 × 74,442.52
  4. Step 4: Simplify right side
    76,706.07x = 7,879,919,769.00
  5. Step 5: Solve for x
    x = 7,879,919,769.00/76,706.07
  6. Step 6: Final answer
    x = 102,728.77

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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.