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Finding the Fourth Proportional to 42,358.68, 63,559.68 and 18,682.68

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Solution

The fourth proportional to 42,358.68, 63,559.68 and 18,682.68 is: 28,033.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,358.68 : 63,559.68 = 18,682.68 : x
  2. Step 2: Convert to fraction form
    42,358.68/63,559.68 = 18,682.68/x
  3. Step 3: Cross multiply
    42,358.68x = 63,559.68 × 18,682.68
  4. Step 4: Simplify right side
    42,358.68x = 1,187,465,162.34
  5. Step 5: Solve for x
    x = 1,187,465,162.34/42,358.68
  6. Step 6: Final answer
    x = 28,033.57

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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.