Home / 72,683.60-100,304.32-40,850.64

Finding the Fourth Proportional to 72,683.60, 100,304.32 and 40,850.64

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Solution

The fourth proportional to 72,683.60, 100,304.32 and 40,850.64 is: 56,374.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,683.60 : 100,304.32 = 40,850.64 : x
  2. Step 2: Convert to fraction form
    72,683.60/100,304.32 = 40,850.64/x
  3. Step 3: Cross multiply
    72,683.60x = 100,304.32 × 40,850.64
  4. Step 4: Simplify right side
    72,683.60x = 4,097,495,666.76
  5. Step 5: Solve for x
    x = 4,097,495,666.76/72,683.60
  6. Step 6: Final answer
    x = 56,374.42

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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.