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Finding the Fourth Proportional to 57,783.36, 86,675.19 and 15,663.72

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Solution

The fourth proportional to 57,783.36, 86,675.19 and 15,663.72 is: 23,495.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,783.36 : 86,675.19 = 15,663.72 : x
  2. Step 2: Convert to fraction form
    57,783.36/86,675.19 = 15,663.72/x
  3. Step 3: Cross multiply
    57,783.36x = 86,675.19 × 15,663.72
  4. Step 4: Simplify right side
    57,783.36x = 1,357,655,907.11
  5. Step 5: Solve for x
    x = 1,357,655,907.11/57,783.36
  6. Step 6: Final answer
    x = 23,495.62

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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.