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Finding the Fourth Proportional to 64,420.78, 88,904.37 and 36,124.24

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Solution

The fourth proportional to 64,420.78, 88,904.37 and 36,124.24 is: 49,853.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,420.78 : 88,904.37 = 36,124.24 : x
  2. Step 2: Convert to fraction form
    64,420.78/88,904.37 = 36,124.24/x
  3. Step 3: Cross multiply
    64,420.78x = 88,904.37 × 36,124.24
  4. Step 4: Simplify right side
    64,420.78x = 3,211,602,798.93
  5. Step 5: Solve for x
    x = 3,211,602,798.93/64,420.78
  6. Step 6: Final answer
    x = 49,853.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.