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Finding the Fourth Proportional to 56,280.80, 84,421.20 and 35,285.60

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Solution

The fourth proportional to 56,280.80, 84,421.20 and 35,285.60 is: 52,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,280.80 : 84,421.20 = 35,285.60 : x
  2. Step 2: Convert to fraction form
    56,280.80/84,421.20 = 35,285.60/x
  3. Step 3: Cross multiply
    56,280.80x = 84,421.20 × 35,285.60
  4. Step 4: Simplify right side
    56,280.80x = 2,978,852,694.72
  5. Step 5: Solve for x
    x = 2,978,852,694.72/56,280.80
  6. Step 6: Final answer
    x = 52,928.40

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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.