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Finding the Fourth Proportional to 101,631.68, 152,457.60 and 42,485.84

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Solution

The fourth proportional to 101,631.68, 152,457.60 and 42,485.84 is: 63,732.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,631.68 : 152,457.60 = 42,485.84 : x
  2. Step 2: Convert to fraction form
    101,631.68/152,457.60 = 42,485.84/x
  3. Step 3: Cross multiply
    101,631.68x = 152,457.60 × 42,485.84
  4. Step 4: Simplify right side
    101,631.68x = 6,477,289,200.38
  5. Step 5: Solve for x
    x = 6,477,289,200.38/101,631.68
  6. Step 6: Final answer
    x = 63,732.97

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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.