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Finding the Fourth Proportional to 68,730.30, 103,095.45 and 53,178.30

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Solution

The fourth proportional to 68,730.30, 103,095.45 and 53,178.30 is: 79,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,730.30 : 103,095.45 = 53,178.30 : x
  2. Step 2: Convert to fraction form
    68,730.30/103,095.45 = 53,178.30/x
  3. Step 3: Cross multiply
    68,730.30x = 103,095.45 × 53,178.30
  4. Step 4: Simplify right side
    68,730.30x = 5,482,440,768.74
  5. Step 5: Solve for x
    x = 5,482,440,768.74/68,730.30
  6. Step 6: Final answer
    x = 79,767.45

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1.5x scale

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.