Home / 76,790.40-105,948.60-49,972.32

Finding the Fourth Proportional to 76,790.40, 105,948.60 and 49,972.32

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Solution

The fourth proportional to 76,790.40, 105,948.60 and 49,972.32 is: 68,947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,790.40 : 105,948.60 = 49,972.32 : x
  2. Step 2: Convert to fraction form
    76,790.40/105,948.60 = 49,972.32/x
  3. Step 3: Cross multiply
    76,790.40x = 105,948.60 × 49,972.32
  4. Step 4: Simplify right side
    76,790.40x = 5,294,497,342.75
  5. Step 5: Solve for x
    x = 5,294,497,342.75/76,790.40
  6. Step 6: Final answer
    x = 68,947.39

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1.5x scale

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.