Home / 71,980.06-99,331.83-39,714.98

Finding the Fourth Proportional to 71,980.06, 99,331.83 and 39,714.98

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Solution

The fourth proportional to 71,980.06, 99,331.83 and 39,714.98 is: 54,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,980.06 : 99,331.83 = 39,714.98 : x
  2. Step 2: Convert to fraction form
    71,980.06/99,331.83 = 39,714.98/x
  3. Step 3: Cross multiply
    71,980.06x = 99,331.83 × 39,714.98
  4. Step 4: Simplify right side
    71,980.06x = 3,944,961,724.82
  5. Step 5: Solve for x
    x = 3,944,961,724.82/71,980.06
  6. Step 6: Final answer
    x = 54,806.31

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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.