Home / 83,628.72-115,368.84-53,398.62

Finding the Fourth Proportional to 83,628.72, 115,368.84 and 53,398.62

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Solution

The fourth proportional to 83,628.72, 115,368.84 and 53,398.62 is: 73,665.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,628.72 : 115,368.84 = 53,398.62 : x
  2. Step 2: Convert to fraction form
    83,628.72/115,368.84 = 53,398.62/x
  3. Step 3: Cross multiply
    83,628.72x = 115,368.84 × 53,398.62
  4. Step 4: Simplify right side
    83,628.72x = 6,160,536,847.00
  5. Step 5: Solve for x
    x = 6,160,536,847.00/83,628.72
  6. Step 6: Final answer
    x = 73,665.33

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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.