Home / 65,215.20-89,835.76-55,623.84

Finding the Fourth Proportional to 65,215.20, 89,835.76 and 55,623.84

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Solution

The fourth proportional to 65,215.20, 89,835.76 and 55,623.84 is: 76,623.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,215.20 : 89,835.76 = 55,623.84 : x
  2. Step 2: Convert to fraction form
    65,215.20/89,835.76 = 55,623.84/x
  3. Step 3: Cross multiply
    65,215.20x = 89,835.76 × 55,623.84
  4. Step 4: Simplify right side
    65,215.20x = 4,997,009,940.52
  5. Step 5: Solve for x
    x = 4,997,009,940.52/65,215.20
  6. Step 6: Final answer
    x = 76,623.39

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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.