Home / 105,488.88-145,574.70-57,742.50

Finding the Fourth Proportional to 105,488.88, 145,574.70 and 57,742.50

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Solution

The fourth proportional to 105,488.88, 145,574.70 and 57,742.50 is: 79,684.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,488.88 : 145,574.70 = 57,742.50 : x
  2. Step 2: Convert to fraction form
    105,488.88/145,574.70 = 57,742.50/x
  3. Step 3: Cross multiply
    105,488.88x = 145,574.70 × 57,742.50
  4. Step 4: Simplify right side
    105,488.88x = 8,405,847,114.75
  5. Step 5: Solve for x
    x = 8,405,847,114.75/105,488.88
  6. Step 6: Final answer
    x = 79,684.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.