Home / 81,429.06-112,376.70-45,630.60

Finding the Fourth Proportional to 81,429.06, 112,376.70 and 45,630.60

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Solution

The fourth proportional to 81,429.06, 112,376.70 and 45,630.60 is: 62,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,429.06 : 112,376.70 = 45,630.60 : x
  2. Step 2: Convert to fraction form
    81,429.06/112,376.70 = 45,630.60/x
  3. Step 3: Cross multiply
    81,429.06x = 112,376.70 × 45,630.60
  4. Step 4: Simplify right side
    81,429.06x = 5,127,816,247.02
  5. Step 5: Solve for x
    x = 5,127,816,247.02/81,429.06
  6. Step 6: Final answer
    x = 62,972.80

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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.