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Finding the Fourth Proportional to 56,807.20, 85,210.80 and 56,461.60

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Solution

The fourth proportional to 56,807.20, 85,210.80 and 56,461.60 is: 84,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,807.20 : 85,210.80 = 56,461.60 : x
  2. Step 2: Convert to fraction form
    56,807.20/85,210.80 = 56,461.60/x
  3. Step 3: Cross multiply
    56,807.20x = 85,210.80 × 56,461.60
  4. Step 4: Simplify right side
    56,807.20x = 4,811,138,105.28
  5. Step 5: Solve for x
    x = 4,811,138,105.28/56,807.20
  6. Step 6: Final answer
    x = 84,692.40

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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.