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Finding the Fourth Proportional to 67,728.90, 93,466.55 and 40,866.23

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Solution

The fourth proportional to 67,728.90, 93,466.55 and 40,866.23 is: 56,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,728.90 : 93,466.55 = 40,866.23 : x
  2. Step 2: Convert to fraction form
    67,728.90/93,466.55 = 40,866.23/x
  3. Step 3: Cross multiply
    67,728.90x = 93,466.55 × 40,866.23
  4. Step 4: Simplify right side
    67,728.90x = 3,819,625,529.61
  5. Step 5: Solve for x
    x = 3,819,625,529.61/67,728.90
  6. Step 6: Final answer
    x = 56,395.80

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1.5x scale

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.