Home / 52,156.40-78,266.72-20,561.08

Finding the Fourth Proportional to 52,156.40, 78,266.72 and 20,561.08

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Solution

The fourth proportional to 52,156.40, 78,266.72 and 20,561.08 is: 30,854.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,156.40 : 78,266.72 = 20,561.08 : x
  2. Step 2: Convert to fraction form
    52,156.40/78,266.72 = 20,561.08/x
  3. Step 3: Cross multiply
    52,156.40x = 78,266.72 × 20,561.08
  4. Step 4: Simplify right side
    52,156.40x = 1,609,248,188.45
  5. Step 5: Solve for x
    x = 1,609,248,188.45/52,156.40
  6. Step 6: Final answer
    x = 30,854.28

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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.