Home / 40,870.34-61,274.44-21,136.32

Finding the Fourth Proportional to 40,870.34, 61,274.44 and 21,136.32

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Solution

The fourth proportional to 40,870.34, 61,274.44 and 21,136.32 is: 31,688.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,870.34 : 61,274.44 = 21,136.32 : x
  2. Step 2: Convert to fraction form
    40,870.34/61,274.44 = 21,136.32/x
  3. Step 3: Cross multiply
    40,870.34x = 61,274.44 × 21,136.32
  4. Step 4: Simplify right side
    40,870.34x = 1,295,116,171.66
  5. Step 5: Solve for x
    x = 1,295,116,171.66/40,870.34
  6. Step 6: Final answer
    x = 31,688.41

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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.