Home / 66,457.55-99,669.32-19,699.49

Finding the Fourth Proportional to 66,457.55, 99,669.32 and 19,699.49

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Solution

The fourth proportional to 66,457.55, 99,669.32 and 19,699.49 is: 29,544.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,457.55 : 99,669.32 = 19,699.49 : x
  2. Step 2: Convert to fraction form
    66,457.55/99,669.32 = 19,699.49/x
  3. Step 3: Cross multiply
    66,457.55x = 99,669.32 × 19,699.49
  4. Step 4: Simplify right side
    66,457.55x = 1,963,434,997.20
  5. Step 5: Solve for x
    x = 1,963,434,997.20/66,457.55
  6. Step 6: Final answer
    x = 29,544.20

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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.