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Finding the Fourth Proportional to 70,461.68, 105,693.06 and 17,871.08

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Solution

The fourth proportional to 70,461.68, 105,693.06 and 17,871.08 is: 26,806.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,461.68 : 105,693.06 = 17,871.08 : x
  2. Step 2: Convert to fraction form
    70,461.68/105,693.06 = 17,871.08/x
  3. Step 3: Cross multiply
    70,461.68x = 105,693.06 × 17,871.08
  4. Step 4: Simplify right side
    70,461.68x = 1,888,849,130.70
  5. Step 5: Solve for x
    x = 1,888,849,130.70/70,461.68
  6. Step 6: Final answer
    x = 26,806.76

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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.