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Finding the Fourth Proportional to 30,174.70, 45,275.01 and 21,465.58

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Solution

The fourth proportional to 30,174.70, 45,275.01 and 21,465.58 is: 32,207.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,174.70 : 45,275.01 = 21,465.58 : x
  2. Step 2: Convert to fraction form
    30,174.70/45,275.01 = 21,465.58/x
  3. Step 3: Cross multiply
    30,174.70x = 45,275.01 × 21,465.58
  4. Step 4: Simplify right side
    30,174.70x = 971,854,349.16
  5. Step 5: Solve for x
    x = 971,854,349.16/30,174.70
  6. Step 6: Final answer
    x = 32,207.59

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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.