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Finding the Fourth Proportional to 98,762.12, 148,139.80 and 39,581.88

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Solution

The fourth proportional to 98,762.12, 148,139.80 and 39,581.88 is: 59,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,762.12 : 148,139.80 = 39,581.88 : x
  2. Step 2: Convert to fraction form
    98,762.12/148,139.80 = 39,581.88/x
  3. Step 3: Cross multiply
    98,762.12x = 148,139.80 × 39,581.88
  4. Step 4: Simplify right side
    98,762.12x = 5,863,651,786.82
  5. Step 5: Solve for x
    x = 5,863,651,786.82/98,762.12
  6. Step 6: Final answer
    x = 59,371.47

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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.