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Finding the Fourth Proportional to 54,898.56, 81,946.08 and 47,157.12

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Solution

The fourth proportional to 54,898.56, 81,946.08 and 47,157.12 is: 70,390.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,898.56 : 81,946.08 = 47,157.12 : x
  2. Step 2: Convert to fraction form
    54,898.56/81,946.08 = 47,157.12/x
  3. Step 3: Cross multiply
    54,898.56x = 81,946.08 × 47,157.12
  4. Step 4: Simplify right side
    54,898.56x = 3,864,341,128.09
  5. Step 5: Solve for x
    x = 3,864,341,128.09/54,898.56
  6. Step 6: Final answer
    x = 70,390.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.