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Finding the Fourth Proportional to 40,637.90, 60,980.95 and 18,450.99

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Solution

The fourth proportional to 40,637.90, 60,980.95 and 18,450.99 is: 27,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,637.90 : 60,980.95 = 18,450.99 : x
  2. Step 2: Convert to fraction form
    40,637.90/60,980.95 = 18,450.99/x
  3. Step 3: Cross multiply
    40,637.90x = 60,980.95 × 18,450.99
  4. Step 4: Simplify right side
    40,637.90x = 1,125,158,921.70
  5. Step 5: Solve for x
    x = 1,125,158,921.70/40,637.90
  6. Step 6: Final answer
    x = 27,687.43

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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.