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Finding the Fourth Proportional to 62,985, 86,919.30 and 34,690.60

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Solution

The fourth proportional to 62,985, 86,919.30 and 34,690.60 is: 47,873.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,985 : 86,919.30 = 34,690.60 : x
  2. Step 2: Convert to fraction form
    62,985/86,919.30 = 34,690.60/x
  3. Step 3: Cross multiply
    62,985x = 86,919.30 × 34,690.60
  4. Step 4: Simplify right side
    62,985x = 3,015,282,668.58
  5. Step 5: Solve for x
    x = 3,015,282,668.58/62,985
  6. Step 6: Final answer
    x = 47,873.03

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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.