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Finding the Fourth Proportional to 72,318.70, 108,038.27 and 46,810.42

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Solution

The fourth proportional to 72,318.70, 108,038.27 and 46,810.42 is: 69,930.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,318.70 : 108,038.27 = 46,810.42 : x
  2. Step 2: Convert to fraction form
    72,318.70/108,038.27 = 46,810.42/x
  3. Step 3: Cross multiply
    72,318.70x = 108,038.27 × 46,810.42
  4. Step 4: Simplify right side
    72,318.70x = 5,057,317,181.90
  5. Step 5: Solve for x
    x = 5,057,317,181.90/72,318.70
  6. Step 6: Final answer
    x = 69,930.97

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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.