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Finding the Fourth Proportional to 47,060.80, 70,526.40 and 31,220.80

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Solution

The fourth proportional to 47,060.80, 70,526.40 and 31,220.80 is: 46,788.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,060.80 : 70,526.40 = 31,220.80 : x
  2. Step 2: Convert to fraction form
    47,060.80/70,526.40 = 31,220.80/x
  3. Step 3: Cross multiply
    47,060.80x = 70,526.40 × 31,220.80
  4. Step 4: Simplify right side
    47,060.80x = 2,201,890,629.12
  5. Step 5: Solve for x
    x = 2,201,890,629.12/47,060.80
  6. Step 6: Final answer
    x = 46,788.21

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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.