Home / 72,680.08-109,019.04-20,088.40

Finding the Fourth Proportional to 72,680.08, 109,019.04 and 20,088.40

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Solution

The fourth proportional to 72,680.08, 109,019.04 and 20,088.40 is: 30,132.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,680.08 : 109,019.04 = 20,088.40 : x
  2. Step 2: Convert to fraction form
    72,680.08/109,019.04 = 20,088.40/x
  3. Step 3: Cross multiply
    72,680.08x = 109,019.04 × 20,088.40
  4. Step 4: Simplify right side
    72,680.08x = 2,190,018,083.14
  5. Step 5: Solve for x
    x = 2,190,018,083.14/72,680.08
  6. Step 6: Final answer
    x = 30,132.30

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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.