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Finding the Fourth Proportional to 85,560.60, 118,069.74 and 47,320.50

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Solution

The fourth proportional to 85,560.60, 118,069.74 and 47,320.50 is: 65,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,560.60 : 118,069.74 = 47,320.50 : x
  2. Step 2: Convert to fraction form
    85,560.60/118,069.74 = 47,320.50/x
  3. Step 3: Cross multiply
    85,560.60x = 118,069.74 × 47,320.50
  4. Step 4: Simplify right side
    85,560.60x = 5,587,119,131.67
  5. Step 5: Solve for x
    x = 5,587,119,131.67/85,560.60
  6. Step 6: Final answer
    x = 65,300.14

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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.