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Finding the Fourth Proportional to 101,331.65, 139,835.08 and 56,006.48

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Solution

The fourth proportional to 101,331.65, 139,835.08 and 56,006.48 is: 77,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,331.65 : 139,835.08 = 56,006.48 : x
  2. Step 2: Convert to fraction form
    101,331.65/139,835.08 = 56,006.48/x
  3. Step 3: Cross multiply
    101,331.65x = 139,835.08 × 56,006.48
  4. Step 4: Simplify right side
    101,331.65x = 7,831,670,611.32
  5. Step 5: Solve for x
    x = 7,831,670,611.32/101,331.65
  6. Step 6: Final answer
    x = 77,287.51

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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.