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Finding the Fourth Proportional to 98,762.29, 136,290.97 and 53,439.28

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Solution

The fourth proportional to 98,762.29, 136,290.97 and 53,439.28 is: 73,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,762.29 : 136,290.97 = 53,439.28 : x
  2. Step 2: Convert to fraction form
    98,762.29/136,290.97 = 53,439.28/x
  3. Step 3: Cross multiply
    98,762.29x = 136,290.97 × 53,439.28
  4. Step 4: Simplify right side
    98,762.29x = 7,283,291,307.30
  5. Step 5: Solve for x
    x = 7,283,291,307.30/98,762.29
  6. Step 6: Final answer
    x = 73,745.67

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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.