Home / 65,071.12-89,771.48-43,857.20

Finding the Fourth Proportional to 65,071.12, 89,771.48 and 43,857.20

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Solution

The fourth proportional to 65,071.12, 89,771.48 and 43,857.20 is: 60,504.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,071.12 : 89,771.48 = 43,857.20 : x
  2. Step 2: Convert to fraction form
    65,071.12/89,771.48 = 43,857.20/x
  3. Step 3: Cross multiply
    65,071.12x = 89,771.48 × 43,857.20
  4. Step 4: Simplify right side
    65,071.12x = 3,937,125,752.66
  5. Step 5: Solve for x
    x = 3,937,125,752.66/65,071.12
  6. Step 6: Final answer
    x = 60,504.96

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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.