Home / 76,787.76-105,953.09-42,795.39

Finding the Fourth Proportional to 76,787.76, 105,953.09 and 42,795.39

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Solution

The fourth proportional to 76,787.76, 105,953.09 and 42,795.39 is: 59,049.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,787.76 : 105,953.09 = 42,795.39 : x
  2. Step 2: Convert to fraction form
    76,787.76/105,953.09 = 42,795.39/x
  3. Step 3: Cross multiply
    76,787.76x = 105,953.09 × 42,795.39
  4. Step 4: Simplify right side
    76,787.76x = 4,534,303,594.28
  5. Step 5: Solve for x
    x = 4,534,303,594.28/76,787.76
  6. Step 6: Final answer
    x = 59,049.82

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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.