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Finding the Fourth Proportional to 60,690.75, 91,036.13 and 19,137.75

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Solution

The fourth proportional to 60,690.75, 91,036.13 and 19,137.75 is: 28,706.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,690.75 : 91,036.13 = 19,137.75 : x
  2. Step 2: Convert to fraction form
    60,690.75/91,036.13 = 19,137.75/x
  3. Step 3: Cross multiply
    60,690.75x = 91,036.13 × 19,137.75
  4. Step 4: Simplify right side
    60,690.75x = 1,742,226,601.22
  5. Step 5: Solve for x
    x = 1,742,226,601.22/60,690.75
  6. Step 6: Final answer
    x = 28,706.63

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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.