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Finding the Fourth Proportional to 86,359.80, 119,168.44 and 63,711.40

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Solution

The fourth proportional to 86,359.80, 119,168.44 and 63,711.40 is: 87,915.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,359.80 : 119,168.44 = 63,711.40 : x
  2. Step 2: Convert to fraction form
    86,359.80/119,168.44 = 63,711.40/x
  3. Step 3: Cross multiply
    86,359.80x = 119,168.44 × 63,711.40
  4. Step 4: Simplify right side
    86,359.80x = 7,592,388,148.22
  5. Step 5: Solve for x
    x = 7,592,388,148.22/86,359.80
  6. Step 6: Final answer
    x = 87,915.77

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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.