Home / 72,746.56-109,119.36-18,711.16

Finding the Fourth Proportional to 72,746.56, 109,119.36 and 18,711.16

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Solution

The fourth proportional to 72,746.56, 109,119.36 and 18,711.16 is: 28,066.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,746.56 : 109,119.36 = 18,711.16 : x
  2. Step 2: Convert to fraction form
    72,746.56/109,119.36 = 18,711.16/x
  3. Step 3: Cross multiply
    72,746.56x = 109,119.36 × 18,711.16
  4. Step 4: Simplify right side
    72,746.56x = 2,041,749,804.06
  5. Step 5: Solve for x
    x = 2,041,749,804.06/72,746.56
  6. Step 6: Final answer
    x = 28,066.62

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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.