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Finding the Fourth Proportional to 72,957.93, 109,404.08 and 70,661.58

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Solution

The fourth proportional to 72,957.93, 109,404.08 and 70,661.58 is: 105,960.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,957.93 : 109,404.08 = 70,661.58 : x
  2. Step 2: Convert to fraction form
    72,957.93/109,404.08 = 70,661.58/x
  3. Step 3: Cross multiply
    72,957.93x = 109,404.08 × 70,661.58
  4. Step 4: Simplify right side
    72,957.93x = 7,730,665,050.13
  5. Step 5: Solve for x
    x = 7,730,665,050.13/72,957.93
  6. Step 6: Final answer
    x = 105,960.59

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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.