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Finding the Fourth Proportional to 57,798.80, 86,699.99 and 15,678.71

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Solution

The fourth proportional to 57,798.80, 86,699.99 and 15,678.71 is: 23,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,798.80 : 86,699.99 = 15,678.71 : x
  2. Step 2: Convert to fraction form
    57,798.80/86,699.99 = 15,678.71/x
  3. Step 3: Cross multiply
    57,798.80x = 86,699.99 × 15,678.71
  4. Step 4: Simplify right side
    57,798.80x = 1,359,344,000.21
  5. Step 5: Solve for x
    x = 1,359,344,000.21/57,798.80
  6. Step 6: Final answer
    x = 23,518.55

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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.