Home / 76,318.93-105,320.72-42,325.51

Finding the Fourth Proportional to 76,318.93, 105,320.72 and 42,325.51

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Solution

The fourth proportional to 76,318.93, 105,320.72 and 42,325.51 is: 58,409.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,318.93 : 105,320.72 = 42,325.51 : x
  2. Step 2: Convert to fraction form
    76,318.93/105,320.72 = 42,325.51/x
  3. Step 3: Cross multiply
    76,318.93x = 105,320.72 × 42,325.51
  4. Step 4: Simplify right side
    76,318.93x = 4,457,753,187.57
  5. Step 5: Solve for x
    x = 4,457,753,187.57/76,318.93
  6. Step 6: Final answer
    x = 58,409.53

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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.