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Finding the Fourth Proportional to 78,722.67, 118,001.99 and 34,337.51

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Solution

The fourth proportional to 78,722.67, 118,001.99 and 34,337.51 is: 51,470.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,722.67 : 118,001.99 = 34,337.51 : x
  2. Step 2: Convert to fraction form
    78,722.67/118,001.99 = 34,337.51/x
  3. Step 3: Cross multiply
    78,722.67x = 118,001.99 × 34,337.51
  4. Step 4: Simplify right side
    78,722.67x = 4,051,894,007.48
  5. Step 5: Solve for x
    x = 4,051,894,007.48/78,722.67
  6. Step 6: Final answer
    x = 51,470.49

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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.