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Finding the Fourth Proportional to 62,760.21, 86,779.62 and 61,746.30

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Solution

The fourth proportional to 62,760.21, 86,779.62 and 61,746.30 is: 85,377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,760.21 : 86,779.62 = 61,746.30 : x
  2. Step 2: Convert to fraction form
    62,760.21/86,779.62 = 61,746.30/x
  3. Step 3: Cross multiply
    62,760.21x = 86,779.62 × 61,746.30
  4. Step 4: Simplify right side
    62,760.21x = 5,358,320,450.41
  5. Step 5: Solve for x
    x = 5,358,320,450.41/62,760.21
  6. Step 6: Final answer
    x = 85,377.67

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1.5x scale

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.