Home / 56,475.12-84,722.40-30,172.80

Finding the Fourth Proportional to 56,475.12, 84,722.40 and 30,172.80

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Solution

The fourth proportional to 56,475.12, 84,722.40 and 30,172.80 is: 45,264.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,475.12 : 84,722.40 = 30,172.80 : x
  2. Step 2: Convert to fraction form
    56,475.12/84,722.40 = 30,172.80/x
  3. Step 3: Cross multiply
    56,475.12x = 84,722.40 × 30,172.80
  4. Step 4: Simplify right side
    56,475.12x = 2,556,312,030.72
  5. Step 5: Solve for x
    x = 2,556,312,030.72/56,475.12
  6. Step 6: Final answer
    x = 45,264.39

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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.