Home / 90,989.70-136,419.93-34,782.45

Finding the Fourth Proportional to 90,989.70, 136,419.93 and 34,782.45

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Solution

The fourth proportional to 90,989.70, 136,419.93 and 34,782.45 is: 52,148.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,989.70 : 136,419.93 = 34,782.45 : x
  2. Step 2: Convert to fraction form
    90,989.70/136,419.93 = 34,782.45/x
  3. Step 3: Cross multiply
    90,989.70x = 136,419.93 × 34,782.45
  4. Step 4: Simplify right side
    90,989.70x = 4,745,019,394.23
  5. Step 5: Solve for x
    x = 4,745,019,394.23/90,989.70
  6. Step 6: Final answer
    x = 52,148.97

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1.5x scale

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.