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Finding the Fourth Proportional to 40,300.40, 60,421.80 and 18,095.60

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Solution

The fourth proportional to 40,300.40, 60,421.80 and 18,095.60 is: 27,130.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,300.40 : 60,421.80 = 18,095.60 : x
  2. Step 2: Convert to fraction form
    40,300.40/60,421.80 = 18,095.60/x
  3. Step 3: Cross multiply
    40,300.40x = 60,421.80 × 18,095.60
  4. Step 4: Simplify right side
    40,300.40x = 1,093,368,724.08
  5. Step 5: Solve for x
    x = 1,093,368,724.08/40,300.40
  6. Step 6: Final answer
    x = 27,130.47

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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.