Home / 76,530.12-105,574.83-65,901.30

Finding the Fourth Proportional to 76,530.12, 105,574.83 and 65,901.30

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Solution

The fourth proportional to 76,530.12, 105,574.83 and 65,901.30 is: 90,912.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,530.12 : 105,574.83 = 65,901.30 : x
  2. Step 2: Convert to fraction form
    76,530.12/105,574.83 = 65,901.30/x
  3. Step 3: Cross multiply
    76,530.12x = 105,574.83 × 65,901.30
  4. Step 4: Simplify right side
    76,530.12x = 6,957,518,792.03
  5. Step 5: Solve for x
    x = 6,957,518,792.03/76,530.12
  6. Step 6: Final answer
    x = 90,912.16

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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.