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Finding the Fourth Proportional to 117,471.21, 162,111.83 and 63,756.87

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Solution

The fourth proportional to 117,471.21, 162,111.83 and 63,756.87 is: 87,985.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,471.21 : 162,111.83 = 63,756.87 : x
  2. Step 2: Convert to fraction form
    117,471.21/162,111.83 = 63,756.87/x
  3. Step 3: Cross multiply
    117,471.21x = 162,111.83 × 63,756.87
  4. Step 4: Simplify right side
    117,471.21x = 10,335,742,551.99
  5. Step 5: Solve for x
    x = 10,335,742,551.99/117,471.21
  6. Step 6: Final answer
    x = 87,985.32

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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.