Home / 71,811.74-99,098.70-39,547.28

Finding the Fourth Proportional to 71,811.74, 99,098.70 and 39,547.28

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Solution

The fourth proportional to 71,811.74, 99,098.70 and 39,547.28 is: 54,574.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,811.74 : 99,098.70 = 39,547.28 : x
  2. Step 2: Convert to fraction form
    71,811.74/99,098.70 = 39,547.28/x
  3. Step 3: Cross multiply
    71,811.74x = 99,098.70 × 39,547.28
  4. Step 4: Simplify right side
    71,811.74x = 3,919,084,036.54
  5. Step 5: Solve for x
    x = 3,919,084,036.54/71,811.74
  6. Step 6: Final answer
    x = 54,574.42

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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.