Home / 78,018,694.77-107,624,979.69-48,239,823.65

Finding the Fourth Proportional to 78,018,694.77, 107,624,979.69 and 48,239,823.65

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Solution

The fourth proportional to 78,018,694.77, 107,624,979.69 and 48,239,823.65 is: 66,545,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,018,694.77 : 107,624,979.69 = 48,239,823.65 : x
  2. Step 2: Convert to fraction form
    78,018,694.77/107,624,979.69 = 48,239,823.65/x
  3. Step 3: Cross multiply
    78,018,694.77x = 107,624,979.69 × 48,239,823.65
  4. Step 4: Simplify right side
    78,018,694.77x = 5,191,810,040,580,431
  5. Step 5: Solve for x
    x = 5,191,810,040,580,431/78,018,694.77
  6. Step 6: Final answer
    x = 66,545,717.74

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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.