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Finding the Fourth Proportional to 72,717.62, 100,316.62 and 42,504.22

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Solution

The fourth proportional to 72,717.62, 100,316.62 and 42,504.22 is: 58,636.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,717.62 : 100,316.62 = 42,504.22 : x
  2. Step 2: Convert to fraction form
    72,717.62/100,316.62 = 42,504.22/x
  3. Step 3: Cross multiply
    72,717.62x = 100,316.62 × 42,504.22
  4. Step 4: Simplify right side
    72,717.62x = 4,263,879,686.14
  5. Step 5: Solve for x
    x = 4,263,879,686.14/72,717.62
  6. Step 6: Final answer
    x = 58,636.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.