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Finding the Fourth Proportional to 53,998.90, 80,998.35 and 40,693.30

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Solution

The fourth proportional to 53,998.90, 80,998.35 and 40,693.30 is: 61,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,998.90 : 80,998.35 = 40,693.30 : x
  2. Step 2: Convert to fraction form
    53,998.90/80,998.35 = 40,693.30/x
  3. Step 3: Cross multiply
    53,998.90x = 80,998.35 × 40,693.30
  4. Step 4: Simplify right side
    53,998.90x = 3,296,090,156.06
  5. Step 5: Solve for x
    x = 3,296,090,156.06/53,998.90
  6. Step 6: Final answer
    x = 61,039.95

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1.5x scale

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.