Home / 287,565.12-431,347.65-87,883.82

Finding the Fourth Proportional to 287,565.12, 431,347.65 and 87,883.82

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Solution

The fourth proportional to 287,565.12, 431,347.65 and 87,883.82 is: 131,825.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,565.12 : 431,347.65 = 87,883.82 : x
  2. Step 2: Convert to fraction form
    287,565.12/431,347.65 = 87,883.82/x
  3. Step 3: Cross multiply
    287,565.12x = 431,347.65 × 87,883.82
  4. Step 4: Simplify right side
    287,565.12x = 37,908,477,073.28
  5. Step 5: Solve for x
    x = 37,908,477,073.28/287,565.12
  6. Step 6: Final answer
    x = 131,825.71

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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.