Home / 63,020-86,968.68-40,702.88

Finding the Fourth Proportional to 63,020, 86,968.68 and 40,702.88

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Solution

The fourth proportional to 63,020, 86,968.68 and 40,702.88 is: 56,170.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,020 : 86,968.68 = 40,702.88 : x
  2. Step 2: Convert to fraction form
    63,020/86,968.68 = 40,702.88/x
  3. Step 3: Cross multiply
    63,020x = 86,968.68 × 40,702.88
  4. Step 4: Simplify right side
    63,020x = 3,539,875,745.80
  5. Step 5: Solve for x
    x = 3,539,875,745.80/63,020
  6. Step 6: Final answer
    x = 56,170.67

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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.