Home / 66,783.57-100,159.62-19,386.15

Finding the Fourth Proportional to 66,783.57, 100,159.62 and 19,386.15

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Solution

The fourth proportional to 66,783.57, 100,159.62 and 19,386.15 is: 29,074.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,783.57 : 100,159.62 = 19,386.15 : x
  2. Step 2: Convert to fraction form
    66,783.57/100,159.62 = 19,386.15/x
  3. Step 3: Cross multiply
    66,783.57x = 100,159.62 × 19,386.15
  4. Step 4: Simplify right side
    66,783.57x = 1,941,709,417.26
  5. Step 5: Solve for x
    x = 1,941,709,417.26/66,783.57
  6. Step 6: Final answer
    x = 29,074.66

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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.