Home / 66,420.86-99,650.63-21,441.26

Finding the Fourth Proportional to 66,420.86, 99,650.63 and 21,441.26

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Solution

The fourth proportional to 66,420.86, 99,650.63 and 21,441.26 is: 32,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.86 : 99,650.63 = 21,441.26 : x
  2. Step 2: Convert to fraction form
    66,420.86/99,650.63 = 21,441.26/x
  3. Step 3: Cross multiply
    66,420.86x = 99,650.63 × 21,441.26
  4. Step 4: Simplify right side
    66,420.86x = 2,136,634,461.53
  5. Step 5: Solve for x
    x = 2,136,634,461.53/66,420.86
  6. Step 6: Final answer
    x = 32,168.13

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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.