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Finding the Fourth Proportional to 85,884, 118,479.60 and 60,747.36

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Solution

The fourth proportional to 85,884, 118,479.60 and 60,747.36 is: 83,802.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,884 : 118,479.60 = 60,747.36 : x
  2. Step 2: Convert to fraction form
    85,884/118,479.60 = 60,747.36/x
  3. Step 3: Cross multiply
    85,884x = 118,479.60 × 60,747.36
  4. Step 4: Simplify right side
    85,884x = 7,197,322,913.86
  5. Step 5: Solve for x
    x = 7,197,322,913.86/85,884
  6. Step 6: Final answer
    x = 83,802.84

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1.5x scale

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.