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Finding the Fourth Proportional to 70,655.04, 105,751.80 and 51,930.12

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Solution

The fourth proportional to 70,655.04, 105,751.80 and 51,930.12 is: 77,725.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,655.04 : 105,751.80 = 51,930.12 : x
  2. Step 2: Convert to fraction form
    70,655.04/105,751.80 = 51,930.12/x
  3. Step 3: Cross multiply
    70,655.04x = 105,751.80 × 51,930.12
  4. Step 4: Simplify right side
    70,655.04x = 5,491,703,664.22
  5. Step 5: Solve for x
    x = 5,491,703,664.22/70,655.04
  6. Step 6: Final answer
    x = 77,725.58

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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.