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Finding the Fourth Proportional to 56,947.80, 85,421.70 and 23,656.80

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Solution

The fourth proportional to 56,947.80, 85,421.70 and 23,656.80 is: 35,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,947.80 : 85,421.70 = 23,656.80 : x
  2. Step 2: Convert to fraction form
    56,947.80/85,421.70 = 23,656.80/x
  3. Step 3: Cross multiply
    56,947.80x = 85,421.70 × 23,656.80
  4. Step 4: Simplify right side
    56,947.80x = 2,020,804,072.56
  5. Step 5: Solve for x
    x = 2,020,804,072.56/56,947.80
  6. Step 6: Final answer
    x = 35,485.20

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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.