Home / 56,445.20-84,701.40-21,388.40

Finding the Fourth Proportional to 56,445.20, 84,701.40 and 21,388.40

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Solution

The fourth proportional to 56,445.20, 84,701.40 and 21,388.40 is: 32,095.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,445.20 : 84,701.40 = 21,388.40 : x
  2. Step 2: Convert to fraction form
    56,445.20/84,701.40 = 21,388.40/x
  3. Step 3: Cross multiply
    56,445.20x = 84,701.40 × 21,388.40
  4. Step 4: Simplify right side
    56,445.20x = 1,811,627,423.76
  5. Step 5: Solve for x
    x = 1,811,627,423.76/56,445.20
  6. Step 6: Final answer
    x = 32,095.33

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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.