Home / 51,108.96-70,516.21-30,685.72

Finding the Fourth Proportional to 51,108.96, 70,516.21 and 30,685.72

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Solution

The fourth proportional to 51,108.96, 70,516.21 and 30,685.72 is: 42,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,108.96 : 70,516.21 = 30,685.72 : x
  2. Step 2: Convert to fraction form
    51,108.96/70,516.21 = 30,685.72/x
  3. Step 3: Cross multiply
    51,108.96x = 70,516.21 × 30,685.72
  4. Step 4: Simplify right side
    51,108.96x = 2,163,840,675.52
  5. Step 5: Solve for x
    x = 2,163,840,675.52/51,108.96
  6. Step 6: Final answer
    x = 42,337.80

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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.