Home / 77,781.51-107,293.76-49,090.98

Finding the Fourth Proportional to 77,781.51, 107,293.76 and 49,090.98

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Solution

The fourth proportional to 77,781.51, 107,293.76 and 49,090.98 is: 67,717.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,781.51 : 107,293.76 = 49,090.98 : x
  2. Step 2: Convert to fraction form
    77,781.51/107,293.76 = 49,090.98/x
  3. Step 3: Cross multiply
    77,781.51x = 107,293.76 × 49,090.98
  4. Step 4: Simplify right side
    77,781.51x = 5,267,155,949.01
  5. Step 5: Solve for x
    x = 5,267,155,949.01/77,781.51
  6. Step 6: Final answer
    x = 67,717.32

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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.