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Finding the Fourth Proportional to 60,512.40, 90,768.60 and 56,138.40

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Solution

The fourth proportional to 60,512.40, 90,768.60 and 56,138.40 is: 84,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,512.40 : 90,768.60 = 56,138.40 : x
  2. Step 2: Convert to fraction form
    60,512.40/90,768.60 = 56,138.40/x
  3. Step 3: Cross multiply
    60,512.40x = 90,768.60 × 56,138.40
  4. Step 4: Simplify right side
    60,512.40x = 5,095,603,974.24
  5. Step 5: Solve for x
    x = 5,095,603,974.24/60,512.40
  6. Step 6: Final answer
    x = 84,207.60

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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.