Home / 287,376.14-431,062.98-87,695.85

Finding the Fourth Proportional to 287,376.14, 431,062.98 and 87,695.85

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Solution

The fourth proportional to 287,376.14, 431,062.98 and 87,695.85 is: 131,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,376.14 : 431,062.98 = 87,695.85 : x
  2. Step 2: Convert to fraction form
    287,376.14/431,062.98 = 87,695.85/x
  3. Step 3: Cross multiply
    287,376.14x = 431,062.98 × 87,695.85
  4. Step 4: Simplify right side
    287,376.14x = 37,802,434,434.63
  5. Step 5: Solve for x
    x = 37,802,434,434.63/287,376.14
  6. Step 6: Final answer
    x = 131,543.40

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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.