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Finding the Fourth Proportional to 70,957.79, 106,436.67 and 28,860.77

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Solution

The fourth proportional to 70,957.79, 106,436.67 and 28,860.77 is: 43,291.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,957.79 : 106,436.67 = 28,860.77 : x
  2. Step 2: Convert to fraction form
    70,957.79/106,436.67 = 28,860.77/x
  3. Step 3: Cross multiply
    70,957.79x = 106,436.67 × 28,860.77
  4. Step 4: Simplify right side
    70,957.79x = 3,071,843,720.25
  5. Step 5: Solve for x
    x = 3,071,843,720.25/70,957.79
  6. Step 6: Final answer
    x = 43,291.14

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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.