Home / 287,764.94-431,632.01-88,085.43

Finding the Fourth Proportional to 287,764.94, 431,632.01 and 88,085.43

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Solution

The fourth proportional to 287,764.94, 431,632.01 and 88,085.43 is: 132,123.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,764.94 : 431,632.01 = 88,085.43 : x
  2. Step 2: Convert to fraction form
    287,764.94/431,632.01 = 88,085.43/x
  3. Step 3: Cross multiply
    287,764.94x = 431,632.01 × 88,085.43
  4. Step 4: Simplify right side
    287,764.94x = 38,020,490,762.19
  5. Step 5: Solve for x
    x = 38,020,490,762.19/287,764.94
  6. Step 6: Final answer
    x = 132,123.43

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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.