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Finding the Fourth Proportional to 75,533.36, 104,139.72 and 47,228.72

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Solution

The fourth proportional to 75,533.36, 104,139.72 and 47,228.72 is: 65,115.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,533.36 : 104,139.72 = 47,228.72 : x
  2. Step 2: Convert to fraction form
    75,533.36/104,139.72 = 47,228.72/x
  3. Step 3: Cross multiply
    75,533.36x = 104,139.72 × 47,228.72
  4. Step 4: Simplify right side
    75,533.36x = 4,918,385,676.76
  5. Step 5: Solve for x
    x = 4,918,385,676.76/75,533.36
  6. Step 6: Final answer
    x = 65,115.41

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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.