Home / 81,835.80-112,916.47-47,837.71

Finding the Fourth Proportional to 81,835.80, 112,916.47 and 47,837.71

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Solution

The fourth proportional to 81,835.80, 112,916.47 and 47,837.71 is: 66,006.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,835.80 : 112,916.47 = 47,837.71 : x
  2. Step 2: Convert to fraction form
    81,835.80/112,916.47 = 47,837.71/x
  3. Step 3: Cross multiply
    81,835.80x = 112,916.47 × 47,837.71
  4. Step 4: Simplify right side
    81,835.80x = 5,401,665,346.08
  5. Step 5: Solve for x
    x = 5,401,665,346.08/81,835.80
  6. Step 6: Final answer
    x = 66,006.14

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1.5x scale

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.