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Finding the Fourth Proportional to 72,435.51, 108,590.46 and 28,031.70

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Solution

The fourth proportional to 72,435.51, 108,590.46 and 28,031.70 is: 42,023.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,435.51 : 108,590.46 = 28,031.70 : x
  2. Step 2: Convert to fraction form
    72,435.51/108,590.46 = 28,031.70/x
  3. Step 3: Cross multiply
    72,435.51x = 108,590.46 × 28,031.70
  4. Step 4: Simplify right side
    72,435.51x = 3,043,975,197.58
  5. Step 5: Solve for x
    x = 3,043,975,197.58/72,435.51
  6. Step 6: Final answer
    x = 42,023.25

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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.