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Finding the Fourth Proportional to 91,815.60, 137,460.60 and 56,517.60

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Solution

The fourth proportional to 91,815.60, 137,460.60 and 56,517.60 is: 84,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,815.60 : 137,460.60 = 56,517.60 : x
  2. Step 2: Convert to fraction form
    91,815.60/137,460.60 = 56,517.60/x
  3. Step 3: Cross multiply
    91,815.60x = 137,460.60 × 56,517.60
  4. Step 4: Simplify right side
    91,815.60x = 7,768,943,206.56
  5. Step 5: Solve for x
    x = 7,768,943,206.56/91,815.60
  6. Step 6: Final answer
    x = 84,614.63

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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.