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Finding the Fourth Proportional to 64,468.80, 96,703.20 and 57,689.10

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Solution

The fourth proportional to 64,468.80, 96,703.20 and 57,689.10 is: 86,533.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,468.80 : 96,703.20 = 57,689.10 : x
  2. Step 2: Convert to fraction form
    64,468.80/96,703.20 = 57,689.10/x
  3. Step 3: Cross multiply
    64,468.80x = 96,703.20 × 57,689.10
  4. Step 4: Simplify right side
    64,468.80x = 5,578,720,575.12
  5. Step 5: Solve for x
    x = 5,578,720,575.12/64,468.80
  6. Step 6: Final answer
    x = 86,533.65

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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.