Home / 66,416.15-99,638.82-19,672.67

Finding the Fourth Proportional to 66,416.15, 99,638.82 and 19,672.67

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Solution

The fourth proportional to 66,416.15, 99,638.82 and 19,672.67 is: 29,513.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,416.15 : 99,638.82 = 19,672.67 : x
  2. Step 2: Convert to fraction form
    66,416.15/99,638.82 = 19,672.67/x
  3. Step 3: Cross multiply
    66,416.15x = 99,638.82 × 19,672.67
  4. Step 4: Simplify right side
    66,416.15x = 1,960,161,126.86
  5. Step 5: Solve for x
    x = 1,960,161,126.86/66,416.15
  6. Step 6: Final answer
    x = 29,513.32

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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.