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Finding the Fourth Proportional to 57,390.16, 79,166.46 and 53,330.86

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Solution

The fourth proportional to 57,390.16, 79,166.46 and 53,330.86 is: 73,566.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,390.16 : 79,166.46 = 53,330.86 : x
  2. Step 2: Convert to fraction form
    57,390.16/79,166.46 = 53,330.86/x
  3. Step 3: Cross multiply
    57,390.16x = 79,166.46 × 53,330.86
  4. Step 4: Simplify right side
    57,390.16x = 4,222,015,394.96
  5. Step 5: Solve for x
    x = 4,222,015,394.96/57,390.16
  6. Step 6: Final answer
    x = 73,566.89

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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.