Home / 76,607.58-105,631.28-53,939.32

Finding the Fourth Proportional to 76,607.58, 105,631.28 and 53,939.32

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Solution

The fourth proportional to 76,607.58, 105,631.28 and 53,939.32 is: 74,374.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,607.58 : 105,631.28 = 53,939.32 : x
  2. Step 2: Convert to fraction form
    76,607.58/105,631.28 = 53,939.32/x
  3. Step 3: Cross multiply
    76,607.58x = 105,631.28 × 53,939.32
  4. Step 4: Simplify right side
    76,607.58x = 5,697,679,413.93
  5. Step 5: Solve for x
    x = 5,697,679,413.93/76,607.58
  6. Step 6: Final answer
    x = 74,374.88

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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.