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Finding the Fourth Proportional to 54,672.60, 82,008.84 and 42,210.80

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Solution

The fourth proportional to 54,672.60, 82,008.84 and 42,210.80 is: 63,316.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,672.60 : 82,008.84 = 42,210.80 : x
  2. Step 2: Convert to fraction form
    54,672.60/82,008.84 = 42,210.80/x
  3. Step 3: Cross multiply
    54,672.60x = 82,008.84 × 42,210.80
  4. Step 4: Simplify right side
    54,672.60x = 3,461,658,743.47
  5. Step 5: Solve for x
    x = 3,461,658,743.47/54,672.60
  6. Step 6: Final answer
    x = 63,316.15

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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.