Home / 52,501.87-78,721.13-20,916.81

Finding the Fourth Proportional to 52,501.87, 78,721.13 and 20,916.81

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Solution

The fourth proportional to 52,501.87, 78,721.13 and 20,916.81 is: 31,362.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,501.87 : 78,721.13 = 20,916.81 : x
  2. Step 2: Convert to fraction form
    52,501.87/78,721.13 = 20,916.81/x
  3. Step 3: Cross multiply
    52,501.87x = 78,721.13 × 20,916.81
  4. Step 4: Simplify right side
    52,501.87x = 1,646,594,750.08
  5. Step 5: Solve for x
    x = 1,646,594,750.08/52,501.87
  6. Step 6: Final answer
    x = 31,362.59

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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.