Home / 78,567.67-117,869.96-25,977.16

Finding the Fourth Proportional to 78,567.67, 117,869.96 and 25,977.16

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Solution

The fourth proportional to 78,567.67, 117,869.96 and 25,977.16 is: 38,971.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,567.67 : 117,869.96 = 25,977.16 : x
  2. Step 2: Convert to fraction form
    78,567.67/117,869.96 = 25,977.16/x
  3. Step 3: Cross multiply
    78,567.67x = 117,869.96 × 25,977.16
  4. Step 4: Simplify right side
    78,567.67x = 3,061,926,810.11
  5. Step 5: Solve for x
    x = 3,061,926,810.11/78,567.67
  6. Step 6: Final answer
    x = 38,971.84

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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.