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Finding the Fourth Proportional to 98,861.42, 148,317.42 and 28,740.74

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Solution

The fourth proportional to 98,861.42, 148,317.42 and 28,740.74 is: 43,118.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,861.42 : 148,317.42 = 28,740.74 : x
  2. Step 2: Convert to fraction form
    98,861.42/148,317.42 = 28,740.74/x
  3. Step 3: Cross multiply
    98,861.42x = 148,317.42 × 28,740.74
  4. Step 4: Simplify right side
    98,861.42x = 4,262,751,664.10
  5. Step 5: Solve for x
    x = 4,262,751,664.10/98,861.42
  6. Step 6: Final answer
    x = 43,118.45

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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.