Home / 68,835.60-94,991.40-40,543.20

Finding the Fourth Proportional to 68,835.60, 94,991.40 and 40,543.20

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Solution

The fourth proportional to 68,835.60, 94,991.40 and 40,543.20 is: 55,948.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,835.60 : 94,991.40 = 40,543.20 : x
  2. Step 2: Convert to fraction form
    68,835.60/94,991.40 = 40,543.20/x
  3. Step 3: Cross multiply
    68,835.60x = 94,991.40 × 40,543.20
  4. Step 4: Simplify right side
    68,835.60x = 3,851,255,328.48
  5. Step 5: Solve for x
    x = 3,851,255,328.48/68,835.60
  6. Step 6: Final answer
    x = 55,948.60

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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.