Home / 76,768.08-105,985.80-55,525.20

Finding the Fourth Proportional to 76,768.08, 105,985.80 and 55,525.20

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Solution

The fourth proportional to 76,768.08, 105,985.80 and 55,525.20 is: 76,657.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,768.08 : 105,985.80 = 55,525.20 : x
  2. Step 2: Convert to fraction form
    76,768.08/105,985.80 = 55,525.20/x
  3. Step 3: Cross multiply
    76,768.08x = 105,985.80 × 55,525.20
  4. Step 4: Simplify right side
    76,768.08x = 5,884,882,742.16
  5. Step 5: Solve for x
    x = 5,884,882,742.16/76,768.08
  6. Step 6: Final answer
    x = 76,657.94

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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.