Home / 51,916.71-77,881.55-20,322.69

Finding the Fourth Proportional to 51,916.71, 77,881.55 and 20,322.69

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Solution

The fourth proportional to 51,916.71, 77,881.55 and 20,322.69 is: 30,486.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,916.71 : 77,881.55 = 20,322.69 : x
  2. Step 2: Convert to fraction form
    51,916.71/77,881.55 = 20,322.69/x
  3. Step 3: Cross multiply
    51,916.71x = 77,881.55 × 20,322.69
  4. Step 4: Simplify right side
    51,916.71x = 1,582,762,495.76
  5. Step 5: Solve for x
    x = 1,582,762,495.76/51,916.71
  6. Step 6: Final answer
    x = 30,486.57

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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.