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Finding the Fourth Proportional to 86,818.88, 130,244.52 and 39,437.30

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Solution

The fourth proportional to 86,818.88, 130,244.52 and 39,437.30 is: 59,163.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,818.88 : 130,244.52 = 39,437.30 : x
  2. Step 2: Convert to fraction form
    86,818.88/130,244.52 = 39,437.30/x
  3. Step 3: Cross multiply
    86,818.88x = 130,244.52 × 39,437.30
  4. Step 4: Simplify right side
    86,818.88x = 5,136,492,208.60
  5. Step 5: Solve for x
    x = 5,136,492,208.60/86,818.88
  6. Step 6: Final answer
    x = 59,163.31

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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.