Home / 77,743.45-116,541.28-30,388.90

Finding the Fourth Proportional to 77,743.45, 116,541.28 and 30,388.90

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Solution

The fourth proportional to 77,743.45, 116,541.28 and 30,388.90 is: 45,554.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,743.45 : 116,541.28 = 30,388.90 : x
  2. Step 2: Convert to fraction form
    77,743.45/116,541.28 = 30,388.90/x
  3. Step 3: Cross multiply
    77,743.45x = 116,541.28 × 30,388.90
  4. Step 4: Simplify right side
    77,743.45x = 3,541,560,941.17
  5. Step 5: Solve for x
    x = 3,541,560,941.17/77,743.45
  6. Step 6: Final answer
    x = 45,554.46

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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.