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Finding the Fourth Proportional to 50,567.78, 75,885.53 and 20,985.65

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Solution

The fourth proportional to 50,567.78, 75,885.53 and 20,985.65 is: 31,492.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,567.78 : 75,885.53 = 20,985.65 : x
  2. Step 2: Convert to fraction form
    50,567.78/75,885.53 = 20,985.65/x
  3. Step 3: Cross multiply
    50,567.78x = 75,885.53 × 20,985.65
  4. Step 4: Simplify right side
    50,567.78x = 1,592,507,172.64
  5. Step 5: Solve for x
    x = 1,592,507,172.64/50,567.78
  6. Step 6: Final answer
    x = 31,492.53

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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.