Home / 81,321.51-112,330.89-62,434.62

Finding the Fourth Proportional to 81,321.51, 112,330.89 and 62,434.62

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Solution

The fourth proportional to 81,321.51, 112,330.89 and 62,434.62 is: 86,242.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,321.51 : 112,330.89 = 62,434.62 : x
  2. Step 2: Convert to fraction form
    81,321.51/112,330.89 = 62,434.62/x
  3. Step 3: Cross multiply
    81,321.51x = 112,330.89 × 62,434.62
  4. Step 4: Simplify right side
    81,321.51x = 7,013,336,431.41
  5. Step 5: Solve for x
    x = 7,013,336,431.41/81,321.51
  6. Step 6: Final answer
    x = 86,242.08

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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.