Home / 76,539.70-105,660.66-51,089.05

Finding the Fourth Proportional to 76,539.70, 105,660.66 and 51,089.05

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Solution

The fourth proportional to 76,539.70, 105,660.66 and 51,089.05 is: 70,526.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,539.70 : 105,660.66 = 51,089.05 : x
  2. Step 2: Convert to fraction form
    76,539.70/105,660.66 = 51,089.05/x
  3. Step 3: Cross multiply
    76,539.70x = 105,660.66 × 51,089.05
  4. Step 4: Simplify right side
    76,539.70x = 5,398,102,741.77
  5. Step 5: Solve for x
    x = 5,398,102,741.77/76,539.70
  6. Step 6: Final answer
    x = 70,526.83

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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.