Home / 81,448.20-112,400.64-45,637.38

Finding the Fourth Proportional to 81,448.20, 112,400.64 and 45,637.38

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Solution

The fourth proportional to 81,448.20, 112,400.64 and 45,637.38 is: 62,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,448.20 : 112,400.64 = 45,637.38 : x
  2. Step 2: Convert to fraction form
    81,448.20/112,400.64 = 45,637.38/x
  3. Step 3: Cross multiply
    81,448.20x = 112,400.64 × 45,637.38
  4. Step 4: Simplify right side
    81,448.20x = 5,129,670,719.92
  5. Step 5: Solve for x
    x = 5,129,670,719.92/81,448.20
  6. Step 6: Final answer
    x = 62,980.77

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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.