Home / 77,721.90-107,238.81-45,873.72

Finding the Fourth Proportional to 77,721.90, 107,238.81 and 45,873.72

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Solution

The fourth proportional to 77,721.90, 107,238.81 and 45,873.72 is: 63,295.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,721.90 : 107,238.81 = 45,873.72 : x
  2. Step 2: Convert to fraction form
    77,721.90/107,238.81 = 45,873.72/x
  3. Step 3: Cross multiply
    77,721.90x = 107,238.81 × 45,873.72
  4. Step 4: Simplify right side
    77,721.90x = 4,919,443,143.07
  5. Step 5: Solve for x
    x = 4,919,443,143.07/77,721.90
  6. Step 6: Final answer
    x = 63,295.46

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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.