Home / 56,446.80-84,638.20-21,387.60

Finding the Fourth Proportional to 56,446.80, 84,638.20 and 21,387.60

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Solution

The fourth proportional to 56,446.80, 84,638.20 and 21,387.60 is: 32,069.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,446.80 : 84,638.20 = 21,387.60 : x
  2. Step 2: Convert to fraction form
    56,446.80/84,638.20 = 21,387.60/x
  3. Step 3: Cross multiply
    56,446.80x = 84,638.20 × 21,387.60
  4. Step 4: Simplify right side
    56,446.80x = 1,810,207,966.32
  5. Step 5: Solve for x
    x = 1,810,207,966.32/56,446.80
  6. Step 6: Final answer
    x = 32,069.28

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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.