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Finding the Fourth Proportional to 72,637.16, 108,958.16 and 20,047.10

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Solution

The fourth proportional to 72,637.16, 108,958.16 and 20,047.10 is: 30,071.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637.16 : 108,958.16 = 20,047.10 : x
  2. Step 2: Convert to fraction form
    72,637.16/108,958.16 = 20,047.10/x
  3. Step 3: Cross multiply
    72,637.16x = 108,958.16 × 20,047.10
  4. Step 4: Simplify right side
    72,637.16x = 2,184,294,634.66
  5. Step 5: Solve for x
    x = 2,184,294,634.66/72,637.16
  6. Step 6: Final answer
    x = 30,071.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.