Home / 70,532.40-105,712.20-31,047.60

Finding the Fourth Proportional to 70,532.40, 105,712.20 and 31,047.60

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Solution

The fourth proportional to 70,532.40, 105,712.20 and 31,047.60 is: 46,533.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,532.40 : 105,712.20 = 31,047.60 : x
  2. Step 2: Convert to fraction form
    70,532.40/105,712.20 = 31,047.60/x
  3. Step 3: Cross multiply
    70,532.40x = 105,712.20 × 31,047.60
  4. Step 4: Simplify right side
    70,532.40x = 3,282,110,100.72
  5. Step 5: Solve for x
    x = 3,282,110,100.72/70,532.40
  6. Step 6: Final answer
    x = 46,533.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.