Home / 82,938.40-124,407.60-20,608.90

Finding the Fourth Proportional to 82,938.40, 124,407.60 and 20,608.90

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Solution

The fourth proportional to 82,938.40, 124,407.60 and 20,608.90 is: 30,913.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,938.40 : 124,407.60 = 20,608.90 : x
  2. Step 2: Convert to fraction form
    82,938.40/124,407.60 = 20,608.90/x
  3. Step 3: Cross multiply
    82,938.40x = 124,407.60 × 20,608.90
  4. Step 4: Simplify right side
    82,938.40x = 2,563,903,787.64
  5. Step 5: Solve for x
    x = 2,563,903,787.64/82,938.40
  6. Step 6: Final answer
    x = 30,913.35

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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.