Home / 105,529.60-145,630.86-57,785.88

Finding the Fourth Proportional to 105,529.60, 145,630.86 and 57,785.88

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Solution

The fourth proportional to 105,529.60, 145,630.86 and 57,785.88 is: 79,744.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,529.60 : 145,630.86 = 57,785.88 : x
  2. Step 2: Convert to fraction form
    105,529.60/145,630.86 = 57,785.88/x
  3. Step 3: Cross multiply
    105,529.60x = 145,630.86 × 57,785.88
  4. Step 4: Simplify right side
    105,529.60x = 8,415,407,400.26
  5. Step 5: Solve for x
    x = 8,415,407,400.26/105,529.60
  6. Step 6: Final answer
    x = 79,744.52

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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.