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Finding the Fourth Proportional to 83,611.50, 115,384.05 and 45,885.66

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Solution

The fourth proportional to 83,611.50, 115,384.05 and 45,885.66 is: 63,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,611.50 : 115,384.05 = 45,885.66 : x
  2. Step 2: Convert to fraction form
    83,611.50/115,384.05 = 45,885.66/x
  3. Step 3: Cross multiply
    83,611.50x = 115,384.05 × 45,885.66
  4. Step 4: Simplify right side
    83,611.50x = 5,294,473,287.72
  5. Step 5: Solve for x
    x = 5,294,473,287.72/83,611.50
  6. Step 6: Final answer
    x = 63,322.31

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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.