Home / 65,135.04-97,709.64-20,751.36

Finding the Fourth Proportional to 65,135.04, 97,709.64 and 20,751.36

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Solution

The fourth proportional to 65,135.04, 97,709.64 and 20,751.36 is: 31,129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,135.04 : 97,709.64 = 20,751.36 : x
  2. Step 2: Convert to fraction form
    65,135.04/97,709.64 = 20,751.36/x
  3. Step 3: Cross multiply
    65,135.04x = 97,709.64 × 20,751.36
  4. Step 4: Simplify right side
    65,135.04x = 2,027,607,915.11
  5. Step 5: Solve for x
    x = 2,027,607,915.11/65,135.04
  6. Step 6: Final answer
    x = 31,129.30

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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.