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Finding the Fourth Proportional to 70,533.40, 105,713.70 and 31,048.60

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Solution

The fourth proportional to 70,533.40, 105,713.70 and 31,048.60 is: 46,534.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,533.40 : 105,713.70 = 31,048.60 : x
  2. Step 2: Convert to fraction form
    70,533.40/105,713.70 = 31,048.60/x
  3. Step 3: Cross multiply
    70,533.40x = 105,713.70 × 31,048.60
  4. Step 4: Simplify right side
    70,533.40x = 3,282,262,385.82
  5. Step 5: Solve for x
    x = 3,282,262,385.82/70,533.40
  6. Step 6: Final answer
    x = 46,534.87

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