Home / 85,709.74-118,169.53-66,557.02

Finding the Fourth Proportional to 85,709.74, 118,169.53 and 66,557.02

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Solution

The fourth proportional to 85,709.74, 118,169.53 and 66,557.02 is: 91,763.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,709.74 : 118,169.53 = 66,557.02 : x
  2. Step 2: Convert to fraction form
    85,709.74/118,169.53 = 66,557.02/x
  3. Step 3: Cross multiply
    85,709.74x = 118,169.53 × 66,557.02
  4. Step 4: Simplify right side
    85,709.74x = 7,865,011,771.60
  5. Step 5: Solve for x
    x = 7,865,011,771.60/85,709.74
  6. Step 6: Final answer
    x = 91,763.34

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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.