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Finding the Fourth Proportional to 74,529.90, 111,904.20 and 45,005.40

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Solution

The fourth proportional to 74,529.90, 111,904.20 and 45,005.40 is: 67,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,529.90 : 111,904.20 = 45,005.40 : x
  2. Step 2: Convert to fraction form
    74,529.90/111,904.20 = 45,005.40/x
  3. Step 3: Cross multiply
    74,529.90x = 111,904.20 × 45,005.40
  4. Step 4: Simplify right side
    74,529.90x = 5,036,293,282.68
  5. Step 5: Solve for x
    x = 5,036,293,282.68/74,529.90
  6. Step 6: Final answer
    x = 67,574.13

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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.