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Finding the Fourth Proportional to 96,678.40, 144,902.40 and 40,518.40

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Solution

The fourth proportional to 96,678.40, 144,902.40 and 40,518.40 is: 60,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,678.40 : 144,902.40 = 40,518.40 : x
  2. Step 2: Convert to fraction form
    96,678.40/144,902.40 = 40,518.40/x
  3. Step 3: Cross multiply
    96,678.40x = 144,902.40 × 40,518.40
  4. Step 4: Simplify right side
    96,678.40x = 5,871,213,404.16
  5. Step 5: Solve for x
    x = 5,871,213,404.16/96,678.40
  6. Step 6: Final answer
    x = 60,729.32

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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.