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Finding the Fourth Proportional to 78,000.61, 107,631.58 and 44,007.11

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Solution

The fourth proportional to 78,000.61, 107,631.58 and 44,007.11 is: 60,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,000.61 : 107,631.58 = 44,007.11 : x
  2. Step 2: Convert to fraction form
    78,000.61/107,631.58 = 44,007.11/x
  3. Step 3: Cross multiply
    78,000.61x = 107,631.58 × 44,007.11
  4. Step 4: Simplify right side
    78,000.61x = 4,736,554,780.53
  5. Step 5: Solve for x
    x = 4,736,554,780.53/78,000.61
  6. Step 6: Final answer
    x = 60,724.59

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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.