Home / 74,109.60-102,271.14-40,117.92

Finding the Fourth Proportional to 74,109.60, 102,271.14 and 40,117.92

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Solution

The fourth proportional to 74,109.60, 102,271.14 and 40,117.92 is: 55,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,109.60 : 102,271.14 = 40,117.92 : x
  2. Step 2: Convert to fraction form
    74,109.60/102,271.14 = 40,117.92/x
  3. Step 3: Cross multiply
    74,109.60x = 102,271.14 × 40,117.92
  4. Step 4: Simplify right side
    74,109.60x = 4,102,905,412.83
  5. Step 5: Solve for x
    x = 4,102,905,412.83/74,109.60
  6. Step 6: Final answer
    x = 55,362.67

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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.