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Finding the Fourth Proportional to 72,703, 100,291.26 and 48,788.56

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Solution

The fourth proportional to 72,703, 100,291.26 and 48,788.56 is: 67,302.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,703 : 100,291.26 = 48,788.56 : x
  2. Step 2: Convert to fraction form
    72,703/100,291.26 = 48,788.56/x
  3. Step 3: Cross multiply
    72,703x = 100,291.26 × 48,788.56
  4. Step 4: Simplify right side
    72,703x = 4,893,066,155.99
  5. Step 5: Solve for x
    x = 4,893,066,155.99/72,703
  6. Step 6: Final answer
    x = 67,302.12

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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.