Home / 77,931.43-116,855.23-40,398.46

Finding the Fourth Proportional to 77,931.43, 116,855.23 and 40,398.46

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Solution

The fourth proportional to 77,931.43, 116,855.23 and 40,398.46 is: 60,575.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,931.43 : 116,855.23 = 40,398.46 : x
  2. Step 2: Convert to fraction form
    77,931.43/116,855.23 = 40,398.46/x
  3. Step 3: Cross multiply
    77,931.43x = 116,855.23 × 40,398.46
  4. Step 4: Simplify right side
    77,931.43x = 4,720,771,380.02
  5. Step 5: Solve for x
    x = 4,720,771,380.02/77,931.43
  6. Step 6: Final answer
    x = 60,575.96

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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.