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Finding the Fourth Proportional to 60,878.90, 91,325.64 and 25,814

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Solution

The fourth proportional to 60,878.90, 91,325.64 and 25,814 is: 38,724.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,878.90 : 91,325.64 = 25,814 : x
  2. Step 2: Convert to fraction form
    60,878.90/91,325.64 = 25,814/x
  3. Step 3: Cross multiply
    60,878.90x = 91,325.64 × 25,814
  4. Step 4: Simplify right side
    60,878.90x = 2,357,480,070.96
  5. Step 5: Solve for x
    x = 2,357,480,070.96/60,878.90
  6. Step 6: Final answer
    x = 38,724.09

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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.