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Finding the Fourth Proportional to 70,260.79, 105,391.37 and 28,707.79

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Solution

The fourth proportional to 70,260.79, 105,391.37 and 28,707.79 is: 43,061.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,260.79 : 105,391.37 = 28,707.79 : x
  2. Step 2: Convert to fraction form
    70,260.79/105,391.37 = 28,707.79/x
  3. Step 3: Cross multiply
    70,260.79x = 105,391.37 × 28,707.79
  4. Step 4: Simplify right side
    70,260.79x = 3,025,553,317.77
  5. Step 5: Solve for x
    x = 3,025,553,317.77/70,260.79
  6. Step 6: Final answer
    x = 43,061.76

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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.