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Finding the Fourth Proportional to 70,489.77, 105,482.08 and 61,034.70

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Solution

The fourth proportional to 70,489.77, 105,482.08 and 61,034.70 is: 91,333.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,489.77 : 105,482.08 = 61,034.70 : x
  2. Step 2: Convert to fraction form
    70,489.77/105,482.08 = 61,034.70/x
  3. Step 3: Cross multiply
    70,489.77x = 105,482.08 × 61,034.70
  4. Step 4: Simplify right side
    70,489.77x = 6,438,067,108.18
  5. Step 5: Solve for x
    x = 6,438,067,108.18/70,489.77
  6. Step 6: Final answer
    x = 91,333.35

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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.