Home / 81,258.78-112,128.06-45,448.08

Finding the Fourth Proportional to 81,258.78, 112,128.06 and 45,448.08

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Solution

The fourth proportional to 81,258.78, 112,128.06 and 45,448.08 is: 62,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,258.78 : 112,128.06 = 45,448.08 : x
  2. Step 2: Convert to fraction form
    81,258.78/112,128.06 = 45,448.08/x
  3. Step 3: Cross multiply
    81,258.78x = 112,128.06 × 45,448.08
  4. Step 4: Simplify right side
    81,258.78x = 5,096,005,041.12
  5. Step 5: Solve for x
    x = 5,096,005,041.12/81,258.78
  6. Step 6: Final answer
    x = 62,713.29

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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.