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Finding the Fourth Proportional to 77,101.67, 115,472.87 and 74,973.45

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Solution

The fourth proportional to 77,101.67, 115,472.87 and 74,973.45 is: 112,285.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,101.67 : 115,472.87 = 74,973.45 : x
  2. Step 2: Convert to fraction form
    77,101.67/115,472.87 = 74,973.45/x
  3. Step 3: Cross multiply
    77,101.67x = 115,472.87 × 74,973.45
  4. Step 4: Simplify right side
    77,101.67x = 8,657,399,445.30
  5. Step 5: Solve for x
    x = 8,657,399,445.30/77,101.67
  6. Step 6: Final answer
    x = 112,285.50

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1.5x scale

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.