Home / 66,457.56-99,669.32-19,699.50

Finding the Fourth Proportional to 66,457.56, 99,669.32 and 19,699.50

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Solution

The fourth proportional to 66,457.56, 99,669.32 and 19,699.50 is: 29,544.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,457.56 : 99,669.32 = 19,699.50 : x
  2. Step 2: Convert to fraction form
    66,457.56/99,669.32 = 19,699.50/x
  3. Step 3: Cross multiply
    66,457.56x = 99,669.32 × 19,699.50
  4. Step 4: Simplify right side
    66,457.56x = 1,963,435,670.84
  5. Step 5: Solve for x
    x = 1,963,435,670.84/66,457.56
  6. Step 6: Final answer
    x = 29,544.20

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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.