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Finding the Fourth Proportional to 60,144.21, 90,215.90 and 47,007.63

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Solution

The fourth proportional to 60,144.21, 90,215.90 and 47,007.63 is: 70,511.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,144.21 : 90,215.90 = 47,007.63 : x
  2. Step 2: Convert to fraction form
    60,144.21/90,215.90 = 47,007.63/x
  3. Step 3: Cross multiply
    60,144.21x = 90,215.90 × 47,007.63
  4. Step 4: Simplify right side
    60,144.21x = 4,240,835,647.32
  5. Step 5: Solve for x
    x = 4,240,835,647.32/60,144.21
  6. Step 6: Final answer
    x = 70,511.12

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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.