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Finding the Fourth Proportional to 69,861.84, 96,457.62 and 65,400.36

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Solution

The fourth proportional to 69,861.84, 96,457.62 and 65,400.36 is: 90,297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,861.84 : 96,457.62 = 65,400.36 : x
  2. Step 2: Convert to fraction form
    69,861.84/96,457.62 = 65,400.36/x
  3. Step 3: Cross multiply
    69,861.84x = 96,457.62 × 65,400.36
  4. Step 4: Simplify right side
    69,861.84x = 6,308,363,072.74
  5. Step 5: Solve for x
    x = 6,308,363,072.74/69,861.84
  6. Step 6: Final answer
    x = 90,297.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.