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Finding the Fourth Proportional to 40,580, 60,870.02 and 12,878

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Solution

The fourth proportional to 40,580, 60,870.02 and 12,878 is: 19,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,580 : 60,870.02 = 12,878 : x
  2. Step 2: Convert to fraction form
    40,580/60,870.02 = 12,878/x
  3. Step 3: Cross multiply
    40,580x = 60,870.02 × 12,878
  4. Step 4: Simplify right side
    40,580x = 783,884,117.56
  5. Step 5: Solve for x
    x = 783,884,117.56/40,580
  6. Step 6: Final answer
    x = 19,317.01

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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.