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Finding the Fourth Proportional to 76,806.68, 115,119.48 and 34,637.40

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Solution

The fourth proportional to 76,806.68, 115,119.48 and 34,637.40 is: 51,915.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,806.68 : 115,119.48 = 34,637.40 : x
  2. Step 2: Convert to fraction form
    76,806.68/115,119.48 = 34,637.40/x
  3. Step 3: Cross multiply
    76,806.68x = 115,119.48 × 34,637.40
  4. Step 4: Simplify right side
    76,806.68x = 3,987,439,476.55
  5. Step 5: Solve for x
    x = 3,987,439,476.55/76,806.68
  6. Step 6: Final answer
    x = 51,915.27

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1.5x scale

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.