Home / 77,123.43-106,424.64-42,666.66

Finding the Fourth Proportional to 77,123.43, 106,424.64 and 42,666.66

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Solution

The fourth proportional to 77,123.43, 106,424.64 and 42,666.66 is: 58,876.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,123.43 : 106,424.64 = 42,666.66 : x
  2. Step 2: Convert to fraction form
    77,123.43/106,424.64 = 42,666.66/x
  3. Step 3: Cross multiply
    77,123.43x = 106,424.64 × 42,666.66
  4. Step 4: Simplify right side
    77,123.43x = 4,540,783,930.50
  5. Step 5: Solve for x
    x = 4,540,783,930.50/77,123.43
  6. Step 6: Final answer
    x = 58,876.84

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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.