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Finding the Fourth Proportional to 60,349.68, 90,406.80 and 39,510

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Solution

The fourth proportional to 60,349.68, 90,406.80 and 39,510 is: 59,187.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,349.68 : 90,406.80 = 39,510 : x
  2. Step 2: Convert to fraction form
    60,349.68/90,406.80 = 39,510/x
  3. Step 3: Cross multiply
    60,349.68x = 90,406.80 × 39,510
  4. Step 4: Simplify right side
    60,349.68x = 3,571,972,668
  5. Step 5: Solve for x
    x = 3,571,972,668/60,349.68
  6. Step 6: Final answer
    x = 59,187.93

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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.