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Finding the Fourth Proportional to 78,881.70, 118,252.02 and 28,950.24

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Solution

The fourth proportional to 78,881.70, 118,252.02 and 28,950.24 is: 43,399.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,881.70 : 118,252.02 = 28,950.24 : x
  2. Step 2: Convert to fraction form
    78,881.70/118,252.02 = 28,950.24/x
  3. Step 3: Cross multiply
    78,881.70x = 118,252.02 × 28,950.24
  4. Step 4: Simplify right side
    78,881.70x = 3,423,424,359.48
  5. Step 5: Solve for x
    x = 3,423,424,359.48/78,881.70
  6. Step 6: Final answer
    x = 43,399.47

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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.