Home / 66,430.57-99,646.22-19,683.85

Finding the Fourth Proportional to 66,430.57, 99,646.22 and 19,683.85

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Solution

The fourth proportional to 66,430.57, 99,646.22 and 19,683.85 is: 29,525.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.57 : 99,646.22 = 19,683.85 : x
  2. Step 2: Convert to fraction form
    66,430.57/99,646.22 = 19,683.85/x
  3. Step 3: Cross multiply
    66,430.57x = 99,646.22 × 19,683.85
  4. Step 4: Simplify right side
    66,430.57x = 1,961,421,149.13
  5. Step 5: Solve for x
    x = 1,961,421,149.13/66,430.57
  6. Step 6: Final answer
    x = 29,525.88

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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.