Home / 76,348.80-105,330.24-51,206.40

Finding the Fourth Proportional to 76,348.80, 105,330.24 and 51,206.40

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Solution

The fourth proportional to 76,348.80, 105,330.24 and 51,206.40 is: 70,643.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,348.80 : 105,330.24 = 51,206.40 : x
  2. Step 2: Convert to fraction form
    76,348.80/105,330.24 = 51,206.40/x
  3. Step 3: Cross multiply
    76,348.80x = 105,330.24 × 51,206.40
  4. Step 4: Simplify right side
    76,348.80x = 5,393,582,401.54
  5. Step 5: Solve for x
    x = 5,393,582,401.54/76,348.80
  6. Step 6: Final answer
    x = 70,643.97

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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.