Home / 51,115.19-70,543.28-28,763.51

Finding the Fourth Proportional to 51,115.19, 70,543.28 and 28,763.51

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Solution

The fourth proportional to 51,115.19, 70,543.28 and 28,763.51 is: 39,696.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,115.19 : 70,543.28 = 28,763.51 : x
  2. Step 2: Convert to fraction form
    51,115.19/70,543.28 = 28,763.51/x
  3. Step 3: Cross multiply
    51,115.19x = 70,543.28 × 28,763.51
  4. Step 4: Simplify right side
    51,115.19x = 2,029,072,339.71
  5. Step 5: Solve for x
    x = 2,029,072,339.71/51,115.19
  6. Step 6: Final answer
    x = 39,696.07

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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.