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Finding the Fourth Proportional to 65,860.58, 98,720.01 and 28,438.28

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Solution

The fourth proportional to 65,860.58, 98,720.01 and 28,438.28 is: 42,626.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,860.58 : 98,720.01 = 28,438.28 : x
  2. Step 2: Convert to fraction form
    65,860.58/98,720.01 = 28,438.28/x
  3. Step 3: Cross multiply
    65,860.58x = 98,720.01 × 28,438.28
  4. Step 4: Simplify right side
    65,860.58x = 2,807,426,792.38
  5. Step 5: Solve for x
    x = 2,807,426,792.38/65,860.58
  6. Step 6: Final answer
    x = 42,626.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.