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Finding the Fourth Proportional to 65,500.61, 98,168.72 and 28,016.64

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Solution

The fourth proportional to 65,500.61, 98,168.72 and 28,016.64 is: 41,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,500.61 : 98,168.72 = 28,016.64 : x
  2. Step 2: Convert to fraction form
    65,500.61/98,168.72 = 28,016.64/x
  3. Step 3: Cross multiply
    65,500.61x = 98,168.72 × 28,016.64
  4. Step 4: Simplify right side
    65,500.61x = 2,750,357,547.42
  5. Step 5: Solve for x
    x = 2,750,357,547.42/65,500.61
  6. Step 6: Final answer
    x = 41,989.80

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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.