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Finding the Fourth Proportional to 57,157.01, 78,879.51 and 34,495.64

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Solution

The fourth proportional to 57,157.01, 78,879.51 and 34,495.64 is: 47,605.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,157.01 : 78,879.51 = 34,495.64 : x
  2. Step 2: Convert to fraction form
    57,157.01/78,879.51 = 34,495.64/x
  3. Step 3: Cross multiply
    57,157.01x = 78,879.51 × 34,495.64
  4. Step 4: Simplify right side
    57,157.01x = 2,720,999,180.34
  5. Step 5: Solve for x
    x = 2,720,999,180.34/57,157.01
  6. Step 6: Final answer
    x = 47,605.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.