Home / 82,946.90-124,420.35-20,617.40

Finding the Fourth Proportional to 82,946.90, 124,420.35 and 20,617.40

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Solution

The fourth proportional to 82,946.90, 124,420.35 and 20,617.40 is: 30,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,946.90 : 124,420.35 = 20,617.40 : x
  2. Step 2: Convert to fraction form
    82,946.90/124,420.35 = 20,617.40/x
  3. Step 3: Cross multiply
    82,946.90x = 124,420.35 × 20,617.40
  4. Step 4: Simplify right side
    82,946.90x = 2,565,224,124.09
  5. Step 5: Solve for x
    x = 2,565,224,124.09/82,946.90
  6. Step 6: Final answer
    x = 30,926.10

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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.