Home / 85,741.45-118,132.67-56,618.10

Finding the Fourth Proportional to 85,741.45, 118,132.67 and 56,618.10

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Solution

The fourth proportional to 85,741.45, 118,132.67 and 56,618.10 is: 78,007.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,741.45 : 118,132.67 = 56,618.10 : x
  2. Step 2: Convert to fraction form
    85,741.45/118,132.67 = 56,618.10/x
  3. Step 3: Cross multiply
    85,741.45x = 118,132.67 × 56,618.10
  4. Step 4: Simplify right side
    85,741.45x = 6,688,446,859.12
  5. Step 5: Solve for x
    x = 6,688,446,859.12/85,741.45
  6. Step 6: Final answer
    x = 78,007.16

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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.