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Finding the Fourth Proportional to 72,807.57, 109,237.62 and 25,429.62

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Solution

The fourth proportional to 72,807.57, 109,237.62 and 25,429.62 is: 38,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,807.57 : 109,237.62 = 25,429.62 : x
  2. Step 2: Convert to fraction form
    72,807.57/109,237.62 = 25,429.62/x
  3. Step 3: Cross multiply
    72,807.57x = 109,237.62 × 25,429.62
  4. Step 4: Simplify right side
    72,807.57x = 2,777,871,166.30
  5. Step 5: Solve for x
    x = 2,777,871,166.30/72,807.57
  6. Step 6: Final answer
    x = 38,153.60

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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.