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Finding the Fourth Proportional to 60,783.60, 91,175.40 and 19,230.60

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Solution

The fourth proportional to 60,783.60, 91,175.40 and 19,230.60 is: 28,845.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,783.60 : 91,175.40 = 19,230.60 : x
  2. Step 2: Convert to fraction form
    60,783.60/91,175.40 = 19,230.60/x
  3. Step 3: Cross multiply
    60,783.60x = 91,175.40 × 19,230.60
  4. Step 4: Simplify right side
    60,783.60x = 1,753,357,647.24
  5. Step 5: Solve for x
    x = 1,753,357,647.24/60,783.60
  6. Step 6: Final answer
    x = 28,845.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.