Home / 66,020.43-99,019.29-30,480.21

Finding the Fourth Proportional to 66,020.43, 99,019.29 and 30,480.21

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Solution

The fourth proportional to 66,020.43, 99,019.29 and 30,480.21 is: 45,715.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.43 : 99,019.29 = 30,480.21 : x
  2. Step 2: Convert to fraction form
    66,020.43/99,019.29 = 30,480.21/x
  3. Step 3: Cross multiply
    66,020.43x = 99,019.29 × 30,480.21
  4. Step 4: Simplify right side
    66,020.43x = 3,018,128,753.25
  5. Step 5: Solve for x
    x = 3,018,128,753.25/66,020.43
  6. Step 6: Final answer
    x = 45,715.07

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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.