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Finding the Fourth Proportional to 59,980.80, 82,828.80 and 40,166.40

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Solution

The fourth proportional to 59,980.80, 82,828.80 and 40,166.40 is: 55,466.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,980.80 : 82,828.80 = 40,166.40 : x
  2. Step 2: Convert to fraction form
    59,980.80/82,828.80 = 40,166.40/x
  3. Step 3: Cross multiply
    59,980.80x = 82,828.80 × 40,166.40
  4. Step 4: Simplify right side
    59,980.80x = 3,326,934,712.32
  5. Step 5: Solve for x
    x = 3,326,934,712.32/59,980.80
  6. Step 6: Final answer
    x = 55,466.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.