Home / 101,905.84-140,622.04-56,579.56

Finding the Fourth Proportional to 101,905.84, 140,622.04 and 56,579.56

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Solution

The fourth proportional to 101,905.84, 140,622.04 and 56,579.56 is: 78,075.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,905.84 : 140,622.04 = 56,579.56 : x
  2. Step 2: Convert to fraction form
    101,905.84/140,622.04 = 56,579.56/x
  3. Step 3: Cross multiply
    101,905.84x = 140,622.04 × 56,579.56
  4. Step 4: Simplify right side
    101,905.84x = 7,956,333,149.50
  5. Step 5: Solve for x
    x = 7,956,333,149.50/101,905.84
  6. Step 6: Final answer
    x = 78,075.34

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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.