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Finding the Fourth Proportional to 82,830.53, 124,245.80 and 20,501.03

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Solution

The fourth proportional to 82,830.53, 124,245.80 and 20,501.03 is: 30,751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,830.53 : 124,245.80 = 20,501.03 : x
  2. Step 2: Convert to fraction form
    82,830.53/124,245.80 = 20,501.03/x
  3. Step 3: Cross multiply
    82,830.53x = 124,245.80 × 20,501.03
  4. Step 4: Simplify right side
    82,830.53x = 2,547,167,158.16
  5. Step 5: Solve for x
    x = 2,547,167,158.16/82,830.53
  6. Step 6: Final answer
    x = 30,751.55

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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.