Home / 90,945.09-125,583.60-57,012.06

Finding the Fourth Proportional to 90,945.09, 125,583.60 and 57,012.06

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Solution

The fourth proportional to 90,945.09, 125,583.60 and 57,012.06 is: 78,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,945.09 : 125,583.60 = 57,012.06 : x
  2. Step 2: Convert to fraction form
    90,945.09/125,583.60 = 57,012.06/x
  3. Step 3: Cross multiply
    90,945.09x = 125,583.60 × 57,012.06
  4. Step 4: Simplify right side
    90,945.09x = 7,159,779,738.22
  5. Step 5: Solve for x
    x = 7,159,779,738.22/90,945.09
  6. Step 6: Final answer
    x = 78,726.40

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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.