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Finding the Fourth Proportional to 47,225.60, 70,805.52 and 20,916.08

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Solution

The fourth proportional to 47,225.60, 70,805.52 and 20,916.08 is: 31,359.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,225.60 : 70,805.52 = 20,916.08 : x
  2. Step 2: Convert to fraction form
    47,225.60/70,805.52 = 20,916.08/x
  3. Step 3: Cross multiply
    47,225.60x = 70,805.52 × 20,916.08
  4. Step 4: Simplify right side
    47,225.60x = 1,480,973,920.76
  5. Step 5: Solve for x
    x = 1,480,973,920.76/47,225.60
  6. Step 6: Final answer
    x = 31,359.56

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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.