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Finding the Fourth Proportional to 70,886.50, 106,350.51 and 20,967.93

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Solution

The fourth proportional to 70,886.50, 106,350.51 and 20,967.93 is: 31,458.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,886.50 : 106,350.51 = 20,967.93 : x
  2. Step 2: Convert to fraction form
    70,886.50/106,350.51 = 20,967.93/x
  3. Step 3: Cross multiply
    70,886.50x = 106,350.51 × 20,967.93
  4. Step 4: Simplify right side
    70,886.50x = 2,229,950,127.77
  5. Step 5: Solve for x
    x = 2,229,950,127.77/70,886.50
  6. Step 6: Final answer
    x = 31,458.04

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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.