Home / 70,821.12-97,732.08-42,160.80

Finding the Fourth Proportional to 70,821.12, 97,732.08 and 42,160.80

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Solution

The fourth proportional to 70,821.12, 97,732.08 and 42,160.80 is: 58,181.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,821.12 : 97,732.08 = 42,160.80 : x
  2. Step 2: Convert to fraction form
    70,821.12/97,732.08 = 42,160.80/x
  3. Step 3: Cross multiply
    70,821.12x = 97,732.08 × 42,160.80
  4. Step 4: Simplify right side
    70,821.12x = 4,120,462,678.46
  5. Step 5: Solve for x
    x = 4,120,462,678.46/70,821.12
  6. Step 6: Final answer
    x = 58,181.27

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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.