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Finding the Fourth Proportional to 70,646.64, 105,940.80 and 28,525.02

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Solution

The fourth proportional to 70,646.64, 105,940.80 and 28,525.02 is: 42,775.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,646.64 : 105,940.80 = 28,525.02 : x
  2. Step 2: Convert to fraction form
    70,646.64/105,940.80 = 28,525.02/x
  3. Step 3: Cross multiply
    70,646.64x = 105,940.80 × 28,525.02
  4. Step 4: Simplify right side
    70,646.64x = 3,021,963,438.82
  5. Step 5: Solve for x
    x = 3,021,963,438.82/70,646.64
  6. Step 6: Final answer
    x = 42,775.76

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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.