Home / 72,746.10-109,119.15-20,155.55

Finding the Fourth Proportional to 72,746.10, 109,119.15 and 20,155.55

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Solution

The fourth proportional to 72,746.10, 109,119.15 and 20,155.55 is: 30,233.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,746.10 : 109,119.15 = 20,155.55 : x
  2. Step 2: Convert to fraction form
    72,746.10/109,119.15 = 20,155.55/x
  3. Step 3: Cross multiply
    72,746.10x = 109,119.15 × 20,155.55
  4. Step 4: Simplify right side
    72,746.10x = 2,199,355,938.19
  5. Step 5: Solve for x
    x = 2,199,355,938.19/72,746.10
  6. Step 6: Final answer
    x = 30,233.32

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Double scale
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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.