Home / 92,809.12-128,098.56-55,105.12

Finding the Fourth Proportional to 92,809.12, 128,098.56 and 55,105.12

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Solution

The fourth proportional to 92,809.12, 128,098.56 and 55,105.12 is: 76,058.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,809.12 : 128,098.56 = 55,105.12 : x
  2. Step 2: Convert to fraction form
    92,809.12/128,098.56 = 55,105.12/x
  3. Step 3: Cross multiply
    92,809.12x = 128,098.56 × 55,105.12
  4. Step 4: Simplify right side
    92,809.12x = 7,058,886,520.63
  5. Step 5: Solve for x
    x = 7,058,886,520.63/92,809.12
  6. Step 6: Final answer
    x = 76,058.11

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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.