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Finding the Fourth Proportional to 145,880.74, 218,858 and 40,699.63

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Solution

The fourth proportional to 145,880.74, 218,858 and 40,699.63 is: 61,059.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,880.74 : 218,858 = 40,699.63 : x
  2. Step 2: Convert to fraction form
    145,880.74/218,858 = 40,699.63/x
  3. Step 3: Cross multiply
    145,880.74x = 218,858 × 40,699.63
  4. Step 4: Simplify right side
    145,880.74x = 8,907,439,622.54
  5. Step 5: Solve for x
    x = 8,907,439,622.54/145,880.74
  6. Step 6: Final answer
    x = 61,059.74

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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.