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Finding the Fourth Proportional to 60,878.30, 84,011.81 and 34,020.80

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Solution

The fourth proportional to 60,878.30, 84,011.81 and 34,020.80 is: 46,948.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,878.30 : 84,011.81 = 34,020.80 : x
  2. Step 2: Convert to fraction form
    60,878.30/84,011.81 = 34,020.80/x
  3. Step 3: Cross multiply
    60,878.30x = 84,011.81 × 34,020.80
  4. Step 4: Simplify right side
    60,878.30x = 2,858,148,985.65
  5. Step 5: Solve for x
    x = 2,858,148,985.65/60,878.30
  6. Step 6: Final answer
    x = 46,948.57

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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.