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Finding the Fourth Proportional to 82,807.20, 124,210.80 and 59,187.60

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Solution

The fourth proportional to 82,807.20, 124,210.80 and 59,187.60 is: 88,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,807.20 : 124,210.80 = 59,187.60 : x
  2. Step 2: Convert to fraction form
    82,807.20/124,210.80 = 59,187.60/x
  3. Step 3: Cross multiply
    82,807.20x = 124,210.80 × 59,187.60
  4. Step 4: Simplify right side
    82,807.20x = 7,351,739,146.08
  5. Step 5: Solve for x
    x = 7,351,739,146.08/82,807.20
  6. Step 6: Final answer
    x = 88,781.40

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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.