Home / 78,742.48-118,116.96-26,157.28

Finding the Fourth Proportional to 78,742.48, 118,116.96 and 26,157.28

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Solution

The fourth proportional to 78,742.48, 118,116.96 and 26,157.28 is: 39,237.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,742.48 : 118,116.96 = 26,157.28 : x
  2. Step 2: Convert to fraction form
    78,742.48/118,116.96 = 26,157.28/x
  3. Step 3: Cross multiply
    78,742.48x = 118,116.96 × 26,157.28
  4. Step 4: Simplify right side
    78,742.48x = 3,089,618,395.47
  5. Step 5: Solve for x
    x = 3,089,618,395.47/78,742.48
  6. Step 6: Final answer
    x = 39,237.00

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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.