Home / 105,524.95-145,624.40-57,778.28

Finding the Fourth Proportional to 105,524.95, 145,624.40 and 57,778.28

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Solution

The fourth proportional to 105,524.95, 145,624.40 and 57,778.28 is: 79,734.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,524.95 : 145,624.40 = 57,778.28 : x
  2. Step 2: Convert to fraction form
    105,524.95/145,624.40 = 57,778.28/x
  3. Step 3: Cross multiply
    105,524.95x = 145,624.40 × 57,778.28
  4. Step 4: Simplify right side
    105,524.95x = 8,413,927,069.14
  5. Step 5: Solve for x
    x = 8,413,927,069.14/105,524.95
  6. Step 6: Final answer
    x = 79,734.01

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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.