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Finding the Fourth Proportional to 101,382.87, 139,905.58 and 56,059.34

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Solution

The fourth proportional to 101,382.87, 139,905.58 and 56,059.34 is: 77,360.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,382.87 : 139,905.58 = 56,059.34 : x
  2. Step 2: Convert to fraction form
    101,382.87/139,905.58 = 56,059.34/x
  3. Step 3: Cross multiply
    101,382.87x = 139,905.58 × 56,059.34
  4. Step 4: Simplify right side
    101,382.87x = 7,843,014,529.52
  5. Step 5: Solve for x
    x = 7,843,014,529.52/101,382.87
  6. Step 6: Final answer
    x = 77,360.36

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1.5x scale

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.