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Finding the Fourth Proportional to 56,411.16, 84,616.74 and 28,728.60

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Solution

The fourth proportional to 56,411.16, 84,616.74 and 28,728.60 is: 43,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,411.16 : 84,616.74 = 28,728.60 : x
  2. Step 2: Convert to fraction form
    56,411.16/84,616.74 = 28,728.60/x
  3. Step 3: Cross multiply
    56,411.16x = 84,616.74 × 28,728.60
  4. Step 4: Simplify right side
    56,411.16x = 2,430,920,476.76
  5. Step 5: Solve for x
    x = 2,430,920,476.76/56,411.16
  6. Step 6: Final answer
    x = 43,092.90

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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.