Home / 71,783.12-107,692.68-42,225.68

Finding the Fourth Proportional to 71,783.12, 107,692.68 and 42,225.68

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Solution

The fourth proportional to 71,783.12, 107,692.68 and 42,225.68 is: 63,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,783.12 : 107,692.68 = 42,225.68 : x
  2. Step 2: Convert to fraction form
    71,783.12/107,692.68 = 42,225.68/x
  3. Step 3: Cross multiply
    71,783.12x = 107,692.68 × 42,225.68
  4. Step 4: Simplify right side
    71,783.12x = 4,547,396,644.02
  5. Step 5: Solve for x
    x = 4,547,396,644.02/71,783.12
  6. Step 6: Final answer
    x = 63,349.11

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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.