Home / 71,021.34-98,002.58-39,188.21

Finding the Fourth Proportional to 71,021.34, 98,002.58 and 39,188.21

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Solution

The fourth proportional to 71,021.34, 98,002.58 and 39,188.21 is: 54,075.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,021.34 : 98,002.58 = 39,188.21 : x
  2. Step 2: Convert to fraction form
    71,021.34/98,002.58 = 39,188.21/x
  3. Step 3: Cross multiply
    71,021.34x = 98,002.58 × 39,188.21
  4. Step 4: Simplify right side
    71,021.34x = 3,840,544,999.63
  5. Step 5: Solve for x
    x = 3,840,544,999.63/71,021.34
  6. Step 6: Final answer
    x = 54,075.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.