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Finding the Fourth Proportional to 77,335.80, 106,731.92 and 43,349.80

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Solution

The fourth proportional to 77,335.80, 106,731.92 and 43,349.80 is: 59,827.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,335.80 : 106,731.92 = 43,349.80 : x
  2. Step 2: Convert to fraction form
    77,335.80/106,731.92 = 43,349.80/x
  3. Step 3: Cross multiply
    77,335.80x = 106,731.92 × 43,349.80
  4. Step 4: Simplify right side
    77,335.80x = 4,626,807,385.62
  5. Step 5: Solve for x
    x = 4,626,807,385.62/77,335.80
  6. Step 6: Final answer
    x = 59,827.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.