Home / 78,405.02-117,840.81-36,881.18

Finding the Fourth Proportional to 78,405.02, 117,840.81 and 36,881.18

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Solution

The fourth proportional to 78,405.02, 117,840.81 and 36,881.18 is: 55,431.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,405.02 : 117,840.81 = 36,881.18 : x
  2. Step 2: Convert to fraction form
    78,405.02/117,840.81 = 36,881.18/x
  3. Step 3: Cross multiply
    78,405.02x = 117,840.81 × 36,881.18
  4. Step 4: Simplify right side
    78,405.02x = 4,346,108,124.96
  5. Step 5: Solve for x
    x = 4,346,108,124.96/78,405.02
  6. Step 6: Final answer
    x = 55,431.50

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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.