Home / 85,913.96-118,627.62-55,720.40

Finding the Fourth Proportional to 85,913.96, 118,627.62 and 55,720.40

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Solution

The fourth proportional to 85,913.96, 118,627.62 and 55,720.40 is: 76,937.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,913.96 : 118,627.62 = 55,720.40 : x
  2. Step 2: Convert to fraction form
    85,913.96/118,627.62 = 55,720.40/x
  3. Step 3: Cross multiply
    85,913.96x = 118,627.62 × 55,720.40
  4. Step 4: Simplify right side
    85,913.96x = 6,609,978,437.45
  5. Step 5: Solve for x
    x = 6,609,978,437.45/85,913.96
  6. Step 6: Final answer
    x = 76,937.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.