Home / 71,322.09-98,427.59-39,490.98

Finding the Fourth Proportional to 71,322.09, 98,427.59 and 39,490.98

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Solution

The fourth proportional to 71,322.09, 98,427.59 and 39,490.98 is: 54,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,322.09 : 98,427.59 = 39,490.98 : x
  2. Step 2: Convert to fraction form
    71,322.09/98,427.59 = 39,490.98/x
  3. Step 3: Cross multiply
    71,322.09x = 98,427.59 × 39,490.98
  4. Step 4: Simplify right side
    71,322.09x = 3,887,001,790.68
  5. Step 5: Solve for x
    x = 3,887,001,790.68/71,322.09
  6. Step 6: Final answer
    x = 54,499.27

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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.