Home / 102,682.68-154,038.60-31,611.23

Finding the Fourth Proportional to 102,682.68, 154,038.60 and 31,611.23

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Solution

The fourth proportional to 102,682.68, 154,038.60 and 31,611.23 is: 47,421.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,682.68 : 154,038.60 = 31,611.23 : x
  2. Step 2: Convert to fraction form
    102,682.68/154,038.60 = 31,611.23/x
  3. Step 3: Cross multiply
    102,682.68x = 154,038.60 × 31,611.23
  4. Step 4: Simplify right side
    102,682.68x = 4,869,349,455.42
  5. Step 5: Solve for x
    x = 4,869,349,455.42/102,682.68
  6. Step 6: Final answer
    x = 47,421.33

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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.