Home / 78,317.42-117,476.12-74,971.31

Finding the Fourth Proportional to 78,317.42, 117,476.12 and 74,971.31

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Solution

The fourth proportional to 78,317.42, 117,476.12 and 74,971.31 is: 112,456.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,317.42 : 117,476.12 = 74,971.31 : x
  2. Step 2: Convert to fraction form
    78,317.42/117,476.12 = 74,971.31/x
  3. Step 3: Cross multiply
    78,317.42x = 117,476.12 × 74,971.31
  4. Step 4: Simplify right side
    78,317.42x = 8,807,338,210.16
  5. Step 5: Solve for x
    x = 8,807,338,210.16/78,317.42
  6. Step 6: Final answer
    x = 112,456.96

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1.5x scale

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.