Home / 56,913.60-85,443.30-30,280.80

Finding the Fourth Proportional to 56,913.60, 85,443.30 and 30,280.80

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Solution

The fourth proportional to 56,913.60, 85,443.30 and 30,280.80 is: 45,459.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.60 : 85,443.30 = 30,280.80 : x
  2. Step 2: Convert to fraction form
    56,913.60/85,443.30 = 30,280.80/x
  3. Step 3: Cross multiply
    56,913.60x = 85,443.30 × 30,280.80
  4. Step 4: Simplify right side
    56,913.60x = 2,587,291,478.64
  5. Step 5: Solve for x
    x = 2,587,291,478.64/56,913.60
  6. Step 6: Final answer
    x = 45,459.99

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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.