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Finding the Fourth Proportional to 90,983, 125,557.44 and 53,258.06

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Solution

The fourth proportional to 90,983, 125,557.44 and 53,258.06 is: 73,496.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,983 : 125,557.44 = 53,258.06 : x
  2. Step 2: Convert to fraction form
    90,983/125,557.44 = 53,258.06/x
  3. Step 3: Cross multiply
    90,983x = 125,557.44 × 53,258.06
  4. Step 4: Simplify right side
    90,983x = 6,686,945,672.97
  5. Step 5: Solve for x
    x = 6,686,945,672.97/90,983
  6. Step 6: Final answer
    x = 73,496.65

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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.