Home / 87,918.61-121,327.71-47,632.65

Finding the Fourth Proportional to 87,918.61, 121,327.71 and 47,632.65

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Solution

The fourth proportional to 87,918.61, 121,327.71 and 47,632.65 is: 65,733.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,918.61 : 121,327.71 = 47,632.65 : x
  2. Step 2: Convert to fraction form
    87,918.61/121,327.71 = 47,632.65/x
  3. Step 3: Cross multiply
    87,918.61x = 121,327.71 × 47,632.65
  4. Step 4: Simplify right side
    87,918.61x = 5,779,160,345.73
  5. Step 5: Solve for x
    x = 5,779,160,345.73/87,918.61
  6. Step 6: Final answer
    x = 65,733.07

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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.