Home / 105,528.18-145,628.37-57,780.66

Finding the Fourth Proportional to 105,528.18, 145,628.37 and 57,780.66

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Solution

The fourth proportional to 105,528.18, 145,628.37 and 57,780.66 is: 79,737.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,528.18 : 145,628.37 = 57,780.66 : x
  2. Step 2: Convert to fraction form
    105,528.18/145,628.37 = 57,780.66/x
  3. Step 3: Cross multiply
    105,528.18x = 145,628.37 × 57,780.66
  4. Step 4: Simplify right side
    105,528.18x = 8,414,503,333.32
  5. Step 5: Solve for x
    x = 8,414,503,333.32/105,528.18
  6. Step 6: Final answer
    x = 79,737.03

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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.