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Finding the Fourth Proportional to 42,007.95, 62,980.62 and 18,310.99

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Solution

The fourth proportional to 42,007.95, 62,980.62 and 18,310.99 is: 27,452.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,007.95 : 62,980.62 = 18,310.99 : x
  2. Step 2: Convert to fraction form
    42,007.95/62,980.62 = 18,310.99/x
  3. Step 3: Cross multiply
    42,007.95x = 62,980.62 × 18,310.99
  4. Step 4: Simplify right side
    42,007.95x = 1,153,237,503.01
  5. Step 5: Solve for x
    x = 1,153,237,503.01/42,007.95
  6. Step 6: Final answer
    x = 27,452.84

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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.