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Finding the Fourth Proportional to 70,051.59, 105,148.87 and 51,275.86

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Solution

The fourth proportional to 70,051.59, 105,148.87 and 51,275.86 is: 76,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,051.59 : 105,148.87 = 51,275.86 : x
  2. Step 2: Convert to fraction form
    70,051.59/105,148.87 = 51,275.86/x
  3. Step 3: Cross multiply
    70,051.59x = 105,148.87 × 51,275.86
  4. Step 4: Simplify right side
    70,051.59x = 5,391,597,955.15
  5. Step 5: Solve for x
    x = 5,391,597,955.15/70,051.59
  6. Step 6: Final answer
    x = 76,966.10

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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.