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Finding the Fourth Proportional to 77,440.88, 106,905.95 and 51,937.91

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Solution

The fourth proportional to 77,440.88, 106,905.95 and 51,937.91 is: 71,699.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,440.88 : 106,905.95 = 51,937.91 : x
  2. Step 2: Convert to fraction form
    77,440.88/106,905.95 = 51,937.91/x
  3. Step 3: Cross multiply
    77,440.88x = 106,905.95 × 51,937.91
  4. Step 4: Simplify right side
    77,440.88x = 5,552,472,006.67
  5. Step 5: Solve for x
    x = 5,552,472,006.67/77,440.88
  6. Step 6: Final answer
    x = 71,699.50

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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.