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Finding the Fourth Proportional to 70,187.59, 105,122.76 and 49,220.74

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Solution

The fourth proportional to 70,187.59, 105,122.76 and 49,220.74 is: 73,719.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,187.59 : 105,122.76 = 49,220.74 : x
  2. Step 2: Convert to fraction form
    70,187.59/105,122.76 = 49,220.74/x
  3. Step 3: Cross multiply
    70,187.59x = 105,122.76 × 49,220.74
  4. Step 4: Simplify right side
    70,187.59x = 5,174,220,038.04
  5. Step 5: Solve for x
    x = 5,174,220,038.04/70,187.59
  6. Step 6: Final answer
    x = 73,719.87

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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.