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Finding the Fourth Proportional to 70,569.25, 105,715.47 and 40,924.80

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Solution

The fourth proportional to 70,569.25, 105,715.47 and 40,924.80 is: 61,306.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,569.25 : 105,715.47 = 40,924.80 : x
  2. Step 2: Convert to fraction form
    70,569.25/105,715.47 = 40,924.80/x
  3. Step 3: Cross multiply
    70,569.25x = 105,715.47 × 40,924.80
  4. Step 4: Simplify right side
    70,569.25x = 4,326,384,802.35
  5. Step 5: Solve for x
    x = 4,326,384,802.35/70,569.25
  6. Step 6: Final answer
    x = 61,306.94

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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.