Home / 53,639.90-80,428.70-35,890.88

Finding the Fourth Proportional to 53,639.90, 80,428.70 and 35,890.88

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Solution

The fourth proportional to 53,639.90, 80,428.70 and 35,890.88 is: 53,815.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,639.90 : 80,428.70 = 35,890.88 : x
  2. Step 2: Convert to fraction form
    53,639.90/80,428.70 = 35,890.88/x
  3. Step 3: Cross multiply
    53,639.90x = 80,428.70 × 35,890.88
  4. Step 4: Simplify right side
    53,639.90x = 2,886,656,820.26
  5. Step 5: Solve for x
    x = 2,886,656,820.26/53,639.90
  6. Step 6: Final answer
    x = 53,815.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.