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Finding the Fourth Proportional to 72,903.44, 99,950.61 and 71,574.84

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Solution

The fourth proportional to 72,903.44, 99,950.61 and 71,574.84 is: 98,129.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,903.44 : 99,950.61 = 71,574.84 : x
  2. Step 2: Convert to fraction form
    72,903.44/99,950.61 = 71,574.84/x
  3. Step 3: Cross multiply
    72,903.44x = 99,950.61 × 71,574.84
  4. Step 4: Simplify right side
    72,903.44x = 7,153,948,784.45
  5. Step 5: Solve for x
    x = 7,153,948,784.45/72,903.44
  6. Step 6: Final answer
    x = 98,129.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.