Home / 77,021.37-115,541.80-26,430.26

Finding the Fourth Proportional to 77,021.37, 115,541.80 and 26,430.26

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Solution

The fourth proportional to 77,021.37, 115,541.80 and 26,430.26 is: 39,648.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,021.37 : 115,541.80 = 26,430.26 : x
  2. Step 2: Convert to fraction form
    77,021.37/115,541.80 = 26,430.26/x
  3. Step 3: Cross multiply
    77,021.37x = 115,541.80 × 26,430.26
  4. Step 4: Simplify right side
    77,021.37x = 3,053,799,105.01
  5. Step 5: Solve for x
    x = 3,053,799,105.01/77,021.37
  6. Step 6: Final answer
    x = 39,648.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.