Home / 51,151.51-70,588-28,490.43

Finding the Fourth Proportional to 51,151.51, 70,588 and 28,490.43

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Solution

The fourth proportional to 51,151.51, 70,588 and 28,490.43 is: 39,316.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,151.51 : 70,588 = 28,490.43 : x
  2. Step 2: Convert to fraction form
    51,151.51/70,588 = 28,490.43/x
  3. Step 3: Cross multiply
    51,151.51x = 70,588 × 28,490.43
  4. Step 4: Simplify right side
    51,151.51x = 2,011,082,472.84
  5. Step 5: Solve for x
    x = 2,011,082,472.84/51,151.51
  6. Step 6: Final answer
    x = 39,316.19

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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.