Home / 90,749.50-136,249.40-62,602.81

Finding the Fourth Proportional to 90,749.50, 136,249.40 and 62,602.81

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Solution

The fourth proportional to 90,749.50, 136,249.40 and 62,602.81 is: 93,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,749.50 : 136,249.40 = 62,602.81 : x
  2. Step 2: Convert to fraction form
    90,749.50/136,249.40 = 62,602.81/x
  3. Step 3: Cross multiply
    90,749.50x = 136,249.40 × 62,602.81
  4. Step 4: Simplify right side
    90,749.50x = 8,529,595,300.81
  5. Step 5: Solve for x
    x = 8,529,595,300.81/90,749.50
  6. Step 6: Final answer
    x = 93,990.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.