Home / 71,386.45-98,511.83-39,555.07

Finding the Fourth Proportional to 71,386.45, 98,511.83 and 39,555.07

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Solution

The fourth proportional to 71,386.45, 98,511.83 and 39,555.07 is: 54,585.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,386.45 : 98,511.83 = 39,555.07 : x
  2. Step 2: Convert to fraction form
    71,386.45/98,511.83 = 39,555.07/x
  3. Step 3: Cross multiply
    71,386.45x = 98,511.83 × 39,555.07
  4. Step 4: Simplify right side
    71,386.45x = 3,896,642,133.70
  5. Step 5: Solve for x
    x = 3,896,642,133.70/71,386.45
  6. Step 6: Final answer
    x = 54,585.18

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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.