Home / 71,702.09-98,944.82-39,870.30

Finding the Fourth Proportional to 71,702.09, 98,944.82 and 39,870.30

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Solution

The fourth proportional to 71,702.09, 98,944.82 and 39,870.30 is: 55,018.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,702.09 : 98,944.82 = 39,870.30 : x
  2. Step 2: Convert to fraction form
    71,702.09/98,944.82 = 39,870.30/x
  3. Step 3: Cross multiply
    71,702.09x = 98,944.82 × 39,870.30
  4. Step 4: Simplify right side
    71,702.09x = 3,944,959,457.49
  5. Step 5: Solve for x
    x = 3,944,959,457.49/71,702.09
  6. Step 6: Final answer
    x = 55,018.76

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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.