Home / 105,525.94-145,625.78-57,779.28

Finding the Fourth Proportional to 105,525.94, 145,625.78 and 57,779.28

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Solution

The fourth proportional to 105,525.94, 145,625.78 and 57,779.28 is: 79,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,525.94 : 145,625.78 = 57,779.28 : x
  2. Step 2: Convert to fraction form
    105,525.94/145,625.78 = 57,779.28/x
  3. Step 3: Cross multiply
    105,525.94x = 145,625.78 × 57,779.28
  4. Step 4: Simplify right side
    105,525.94x = 8,414,152,717.84
  5. Step 5: Solve for x
    x = 8,414,152,717.84/105,525.94
  6. Step 6: Final answer
    x = 79,735.40

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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.