Home / 86,994.95-120,047.34-51,178.04

Finding the Fourth Proportional to 86,994.95, 120,047.34 and 51,178.04

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Solution

The fourth proportional to 86,994.95, 120,047.34 and 51,178.04 is: 70,622.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,994.95 : 120,047.34 = 51,178.04 : x
  2. Step 2: Convert to fraction form
    86,994.95/120,047.34 = 51,178.04/x
  3. Step 3: Cross multiply
    86,994.95x = 120,047.34 × 51,178.04
  4. Step 4: Simplify right side
    86,994.95x = 6,143,786,968.18
  5. Step 5: Solve for x
    x = 6,143,786,968.18/86,994.95
  6. Step 6: Final answer
    x = 70,622.34

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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.