Home / 78,541.60-117,812.40-41,087.20

Finding the Fourth Proportional to 78,541.60, 117,812.40 and 41,087.20

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Solution

The fourth proportional to 78,541.60, 117,812.40 and 41,087.20 is: 61,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,541.60 : 117,812.40 = 41,087.20 : x
  2. Step 2: Convert to fraction form
    78,541.60/117,812.40 = 41,087.20/x
  3. Step 3: Cross multiply
    78,541.60x = 117,812.40 × 41,087.20
  4. Step 4: Simplify right side
    78,541.60x = 4,840,581,641.28
  5. Step 5: Solve for x
    x = 4,840,581,641.28/78,541.60
  6. Step 6: Final answer
    x = 61,630.80

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1.5x scale

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.