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Finding the Fourth Proportional to 30,501.42, 45,781.02 and 15,720.54

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Solution

The fourth proportional to 30,501.42, 45,781.02 and 15,720.54 is: 23,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,501.42 : 45,781.02 = 15,720.54 : x
  2. Step 2: Convert to fraction form
    30,501.42/45,781.02 = 15,720.54/x
  3. Step 3: Cross multiply
    30,501.42x = 45,781.02 × 15,720.54
  4. Step 4: Simplify right side
    30,501.42x = 719,702,356.15
  5. Step 5: Solve for x
    x = 719,702,356.15/30,501.42
  6. Step 6: Final answer
    x = 23,595.70

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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.