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Finding the Fourth Proportional to 94,428, 141,642 and 28,764

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Solution

The fourth proportional to 94,428, 141,642 and 28,764 is: 43,146

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,428 : 141,642 = 28,764 : x
  2. Step 2: Convert to fraction form
    94,428/141,642 = 28,764/x
  3. Step 3: Cross multiply
    94,428x = 141,642 × 28,764
  4. Step 4: Simplify right side
    94,428x = 4,074,190,488
  5. Step 5: Solve for x
    x = 4,074,190,488/94,428
  6. Step 6: Final answer
    x = 43,146

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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.