Home / 76,619.81-105,740.10-42,635.88

Finding the Fourth Proportional to 76,619.81, 105,740.10 and 42,635.88

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Solution

The fourth proportional to 76,619.81, 105,740.10 and 42,635.88 is: 58,840.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,619.81 : 105,740.10 = 42,635.88 : x
  2. Step 2: Convert to fraction form
    76,619.81/105,740.10 = 42,635.88/x
  3. Step 3: Cross multiply
    76,619.81x = 105,740.10 × 42,635.88
  4. Step 4: Simplify right side
    76,619.81x = 4,508,322,214.79
  5. Step 5: Solve for x
    x = 4,508,322,214.79/76,619.81
  6. Step 6: Final answer
    x = 58,840.16

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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.