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Finding the Fourth Proportional to 60,603.50, 90,880.40 and 21,147.32

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Solution

The fourth proportional to 60,603.50, 90,880.40 and 21,147.32 is: 31,712.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,603.50 : 90,880.40 = 21,147.32 : x
  2. Step 2: Convert to fraction form
    60,603.50/90,880.40 = 21,147.32/x
  3. Step 3: Cross multiply
    60,603.50x = 90,880.40 × 21,147.32
  4. Step 4: Simplify right side
    60,603.50x = 1,921,876,900.53
  5. Step 5: Solve for x
    x = 1,921,876,900.53/60,603.50
  6. Step 6: Final answer
    x = 31,712.31

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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.