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Finding the Fourth Proportional to 72,503.37, 100,059.75 and 40,239.63

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Solution

The fourth proportional to 72,503.37, 100,059.75 and 40,239.63 is: 55,533.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,503.37 : 100,059.75 = 40,239.63 : x
  2. Step 2: Convert to fraction form
    72,503.37/100,059.75 = 40,239.63/x
  3. Step 3: Cross multiply
    72,503.37x = 100,059.75 × 40,239.63
  4. Step 4: Simplify right side
    72,503.37x = 4,026,367,317.89
  5. Step 5: Solve for x
    x = 4,026,367,317.89/72,503.37
  6. Step 6: Final answer
    x = 55,533.52

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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.