Home / 85,941.04-118,519.32-57,276.80

Finding the Fourth Proportional to 85,941.04, 118,519.32 and 57,276.80

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Solution

The fourth proportional to 85,941.04, 118,519.32 and 57,276.80 is: 78,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,941.04 : 118,519.32 = 57,276.80 : x
  2. Step 2: Convert to fraction form
    85,941.04/118,519.32 = 57,276.80/x
  3. Step 3: Cross multiply
    85,941.04x = 118,519.32 × 57,276.80
  4. Step 4: Simplify right side
    85,941.04x = 6,788,407,387.78
  5. Step 5: Solve for x
    x = 6,788,407,387.78/85,941.04
  6. Step 6: Final answer
    x = 78,989.12

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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.