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Finding the Fourth Proportional to 70,596.52, 105,871.29 and 28,465.72

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Solution

The fourth proportional to 70,596.52, 105,871.29 and 28,465.72 is: 42,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,596.52 : 105,871.29 = 28,465.72 : x
  2. Step 2: Convert to fraction form
    70,596.52/105,871.29 = 28,465.72/x
  3. Step 3: Cross multiply
    70,596.52x = 105,871.29 × 28,465.72
  4. Step 4: Simplify right side
    70,596.52x = 3,013,702,497.18
  5. Step 5: Solve for x
    x = 3,013,702,497.18/70,596.52
  6. Step 6: Final answer
    x = 42,689.11

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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.