Home / 77,922.84-107,533.53-42,112.79

Finding the Fourth Proportional to 77,922.84, 107,533.53 and 42,112.79

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Solution

The fourth proportional to 77,922.84, 107,533.53 and 42,112.79 is: 58,115.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,922.84 : 107,533.53 = 42,112.79 : x
  2. Step 2: Convert to fraction form
    77,922.84/107,533.53 = 42,112.79/x
  3. Step 3: Cross multiply
    77,922.84x = 107,533.53 × 42,112.79
  4. Step 4: Simplify right side
    77,922.84x = 4,528,536,966.85
  5. Step 5: Solve for x
    x = 4,528,536,966.85/77,922.84
  6. Step 6: Final answer
    x = 58,115.66

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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.