Home / 90,905.40-125,466.98-55,115.01

Finding the Fourth Proportional to 90,905.40, 125,466.98 and 55,115.01

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Solution

The fourth proportional to 90,905.40, 125,466.98 and 55,115.01 is: 76,069.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,905.40 : 125,466.98 = 55,115.01 : x
  2. Step 2: Convert to fraction form
    90,905.40/125,466.98 = 55,115.01/x
  3. Step 3: Cross multiply
    90,905.40x = 125,466.98 × 55,115.01
  4. Step 4: Simplify right side
    90,905.40x = 6,915,113,581.79
  5. Step 5: Solve for x
    x = 6,915,113,581.79/90,905.40
  6. Step 6: Final answer
    x = 76,069.34

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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.