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Finding the Fourth Proportional to 94,710, 142,066.08 and 28,148.40

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Solution

The fourth proportional to 94,710, 142,066.08 and 28,148.40 is: 42,222.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,710 : 142,066.08 = 28,148.40 : x
  2. Step 2: Convert to fraction form
    94,710/142,066.08 = 28,148.40/x
  3. Step 3: Cross multiply
    94,710x = 142,066.08 × 28,148.40
  4. Step 4: Simplify right side
    94,710x = 3,998,932,846.27
  5. Step 5: Solve for x
    x = 3,998,932,846.27/94,710
  6. Step 6: Final answer
    x = 42,222.92

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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.