Home / 76,100.49-105,011.52-51,521.30

Finding the Fourth Proportional to 76,100.49, 105,011.52 and 51,521.30

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Solution

The fourth proportional to 76,100.49, 105,011.52 and 51,521.30 is: 71,094.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,100.49 : 105,011.52 = 51,521.30 : x
  2. Step 2: Convert to fraction form
    76,100.49/105,011.52 = 51,521.30/x
  3. Step 3: Cross multiply
    76,100.49x = 105,011.52 × 51,521.30
  4. Step 4: Simplify right side
    76,100.49x = 5,410,330,403.45
  5. Step 5: Solve for x
    x = 5,410,330,403.45/76,100.49
  6. Step 6: Final answer
    x = 71,094.56

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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.