Home / 77,730.49-107,153.76-54,999.46

Finding the Fourth Proportional to 77,730.49, 107,153.76 and 54,999.46

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Solution

The fourth proportional to 77,730.49, 107,153.76 and 54,999.46 is: 75,818.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,730.49 : 107,153.76 = 54,999.46 : x
  2. Step 2: Convert to fraction form
    77,730.49/107,153.76 = 54,999.46/x
  3. Step 3: Cross multiply
    77,730.49x = 107,153.76 × 54,999.46
  4. Step 4: Simplify right side
    77,730.49x = 5,893,398,936.97
  5. Step 5: Solve for x
    x = 5,893,398,936.97/77,730.49
  6. Step 6: Final answer
    x = 75,818.37

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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.