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Finding the Fourth Proportional to 88,686.30, 133,029.45 and 39,438.30

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Solution

The fourth proportional to 88,686.30, 133,029.45 and 39,438.30 is: 59,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,686.30 : 133,029.45 = 39,438.30 : x
  2. Step 2: Convert to fraction form
    88,686.30/133,029.45 = 39,438.30/x
  3. Step 3: Cross multiply
    88,686.30x = 133,029.45 × 39,438.30
  4. Step 4: Simplify right side
    88,686.30x = 5,246,455,357.94
  5. Step 5: Solve for x
    x = 5,246,455,357.94/88,686.30
  6. Step 6: Final answer
    x = 59,157.45

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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.