Home / 66,918.08-100,386.30-38,851.32

Finding the Fourth Proportional to 66,918.08, 100,386.30 and 38,851.32

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Solution

The fourth proportional to 66,918.08, 100,386.30 and 38,851.32 is: 58,282.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,918.08 : 100,386.30 = 38,851.32 : x
  2. Step 2: Convert to fraction form
    66,918.08/100,386.30 = 38,851.32/x
  3. Step 3: Cross multiply
    66,918.08x = 100,386.30 × 38,851.32
  4. Step 4: Simplify right side
    66,918.08x = 3,900,140,264.92
  5. Step 5: Solve for x
    x = 3,900,140,264.92/66,918.08
  6. Step 6: Final answer
    x = 58,282.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.