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Finding the Fourth Proportional to 55,210.60, 79,899.85 and 55,210.60

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Solution

The fourth proportional to 55,210.60, 79,899.85 and 55,210.60 is: 79,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,210.60 : 79,899.85 = 55,210.60 : x
  2. Step 2: Convert to fraction form
    55,210.60/79,899.85 = 55,210.60/x
  3. Step 3: Cross multiply
    55,210.60x = 79,899.85 × 55,210.60
  4. Step 4: Simplify right side
    55,210.60x = 4,411,318,658.41
  5. Step 5: Solve for x
    x = 4,411,318,658.41/55,210.60
  6. Step 6: Final answer
    x = 79,899.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.