Home / 81,270.39-112,158.09-45,462.81

Finding the Fourth Proportional to 81,270.39, 112,158.09 and 45,462.81

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Solution

The fourth proportional to 81,270.39, 112,158.09 and 45,462.81 is: 62,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,270.39 : 112,158.09 = 45,462.81 : x
  2. Step 2: Convert to fraction form
    81,270.39/112,158.09 = 45,462.81/x
  3. Step 3: Cross multiply
    81,270.39x = 112,158.09 × 45,462.81
  4. Step 4: Simplify right side
    81,270.39x = 5,099,021,935.63
  5. Step 5: Solve for x
    x = 5,099,021,935.63/81,270.39
  6. Step 6: Final answer
    x = 62,741.45

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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.