Home / 86,345.69-119,159.09-48,107.81

Finding the Fourth Proportional to 86,345.69, 119,159.09 and 48,107.81

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Solution

The fourth proportional to 86,345.69, 119,159.09 and 48,107.81 is: 66,389.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,345.69 : 119,159.09 = 48,107.81 : x
  2. Step 2: Convert to fraction form
    86,345.69/119,159.09 = 48,107.81/x
  3. Step 3: Cross multiply
    86,345.69x = 119,159.09 × 48,107.81
  4. Step 4: Simplify right side
    86,345.69x = 5,732,482,025.16
  5. Step 5: Solve for x
    x = 5,732,482,025.16/86,345.69
  6. Step 6: Final answer
    x = 66,389.91

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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.