Home / 71,319.98-98,427.12-39,491.84

Finding the Fourth Proportional to 71,319.98, 98,427.12 and 39,491.84

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Solution

The fourth proportional to 71,319.98, 98,427.12 and 39,491.84 is: 54,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,319.98 : 98,427.12 = 39,491.84 : x
  2. Step 2: Convert to fraction form
    71,319.98/98,427.12 = 39,491.84/x
  3. Step 3: Cross multiply
    71,319.98x = 98,427.12 × 39,491.84
  4. Step 4: Simplify right side
    71,319.98x = 3,887,068,172.67
  5. Step 5: Solve for x
    x = 3,887,068,172.67/71,319.98
  6. Step 6: Final answer
    x = 54,501.81

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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.