Home / 92,743.76-128,052.96-56,981.72

Finding the Fourth Proportional to 92,743.76, 128,052.96 and 56,981.72

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Solution

The fourth proportional to 92,743.76, 128,052.96 and 56,981.72 is: 78,675.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,743.76 : 128,052.96 = 56,981.72 : x
  2. Step 2: Convert to fraction form
    92,743.76/128,052.96 = 56,981.72/x
  3. Step 3: Cross multiply
    92,743.76x = 128,052.96 × 56,981.72
  4. Step 4: Simplify right side
    92,743.76x = 7,296,677,911.89
  5. Step 5: Solve for x
    x = 7,296,677,911.89/92,743.76
  6. Step 6: Final answer
    x = 78,675.67

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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.