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Finding the Fourth Proportional to 68,000.94, 93,814.40 and 39,315.30

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Solution

The fourth proportional to 68,000.94, 93,814.40 and 39,315.30 is: 54,239.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,000.94 : 93,814.40 = 39,315.30 : x
  2. Step 2: Convert to fraction form
    68,000.94/93,814.40 = 39,315.30/x
  3. Step 3: Cross multiply
    68,000.94x = 93,814.40 × 39,315.30
  4. Step 4: Simplify right side
    68,000.94x = 3,688,341,280.32
  5. Step 5: Solve for x
    x = 3,688,341,280.32/68,000.94
  6. Step 6: Final answer
    x = 54,239.56

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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.