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Finding the Fourth Proportional to 77,069.34, 106,362.99 and 48,393.72

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Solution

The fourth proportional to 77,069.34, 106,362.99 and 48,393.72 is: 66,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,069.34 : 106,362.99 = 48,393.72 : x
  2. Step 2: Convert to fraction form
    77,069.34/106,362.99 = 48,393.72/x
  3. Step 3: Cross multiply
    77,069.34x = 106,362.99 × 48,393.72
  4. Step 4: Simplify right side
    77,069.34x = 5,147,300,756.42
  5. Step 5: Solve for x
    x = 5,147,300,756.42/77,069.34
  6. Step 6: Final answer
    x = 66,787.92

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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.