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Finding the Fourth Proportional to 72,210.10, 108,315.15 and 54,714.10

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Solution

The fourth proportional to 72,210.10, 108,315.15 and 54,714.10 is: 82,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,210.10 : 108,315.15 = 54,714.10 : x
  2. Step 2: Convert to fraction form
    72,210.10/108,315.15 = 54,714.10/x
  3. Step 3: Cross multiply
    72,210.10x = 108,315.15 × 54,714.10
  4. Step 4: Simplify right side
    72,210.10x = 5,926,365,948.62
  5. Step 5: Solve for x
    x = 5,926,365,948.62/72,210.10
  6. Step 6: Final answer
    x = 82,071.15

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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.