Home / 84,045.28-115,994.83-55,360.34

Finding the Fourth Proportional to 84,045.28, 115,994.83 and 55,360.34

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Solution

The fourth proportional to 84,045.28, 115,994.83 and 55,360.34 is: 76,405.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,045.28 : 115,994.83 = 55,360.34 : x
  2. Step 2: Convert to fraction form
    84,045.28/115,994.83 = 55,360.34/x
  3. Step 3: Cross multiply
    84,045.28x = 115,994.83 × 55,360.34
  4. Step 4: Simplify right side
    84,045.28x = 6,421,513,288.42
  5. Step 5: Solve for x
    x = 6,421,513,288.42/84,045.28
  6. Step 6: Final answer
    x = 76,405.41

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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.