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Finding the Fourth Proportional to 65,039.76, 97,545.87 and 20,670.39

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Solution

The fourth proportional to 65,039.76, 97,545.87 and 20,670.39 is: 31,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,039.76 : 97,545.87 = 20,670.39 : x
  2. Step 2: Convert to fraction form
    65,039.76/97,545.87 = 20,670.39/x
  3. Step 3: Cross multiply
    65,039.76x = 97,545.87 × 20,670.39
  4. Step 4: Simplify right side
    65,039.76x = 2,016,311,175.79
  5. Step 5: Solve for x
    x = 2,016,311,175.79/65,039.76
  6. Step 6: Final answer
    x = 31,001.21

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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.