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Finding the Fourth Proportional to 57,210.65, 85,815.99 and 15,657.65

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Solution

The fourth proportional to 57,210.65, 85,815.99 and 15,657.65 is: 23,486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,210.65 : 85,815.99 = 15,657.65 : x
  2. Step 2: Convert to fraction form
    57,210.65/85,815.99 = 15,657.65/x
  3. Step 3: Cross multiply
    57,210.65x = 85,815.99 × 15,657.65
  4. Step 4: Simplify right side
    57,210.65x = 1,343,676,735.82
  5. Step 5: Solve for x
    x = 1,343,676,735.82/57,210.65
  6. Step 6: Final answer
    x = 23,486.48

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Similar ratio
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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.