Home / 78,297.68-117,445.08-31,549.36

Finding the Fourth Proportional to 78,297.68, 117,445.08 and 31,549.36

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Solution

The fourth proportional to 78,297.68, 117,445.08 and 31,549.36 is: 47,323.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,297.68 : 117,445.08 = 31,549.36 : x
  2. Step 2: Convert to fraction form
    78,297.68/117,445.08 = 31,549.36/x
  3. Step 3: Cross multiply
    78,297.68x = 117,445.08 × 31,549.36
  4. Step 4: Simplify right side
    78,297.68x = 3,705,317,109.15
  5. Step 5: Solve for x
    x = 3,705,317,109.15/78,297.68
  6. Step 6: Final answer
    x = 47,323.46

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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.