Home / 85,720.84-118,296.54-51,301.16

Finding the Fourth Proportional to 85,720.84, 118,296.54 and 51,301.16

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Solution

The fourth proportional to 85,720.84, 118,296.54 and 51,301.16 is: 70,796.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,720.84 : 118,296.54 = 51,301.16 : x
  2. Step 2: Convert to fraction form
    85,720.84/118,296.54 = 51,301.16/x
  3. Step 3: Cross multiply
    85,720.84x = 118,296.54 × 51,301.16
  4. Step 4: Simplify right side
    85,720.84x = 6,068,749,134.50
  5. Step 5: Solve for x
    x = 6,068,749,134.50/85,720.84
  6. Step 6: Final answer
    x = 70,796.66

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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.