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Finding the Fourth Proportional to 101,035.76, 139,365.78 and 58,578.80

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Solution

The fourth proportional to 101,035.76, 139,365.78 and 58,578.80 is: 80,801.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,035.76 : 139,365.78 = 58,578.80 : x
  2. Step 2: Convert to fraction form
    101,035.76/139,365.78 = 58,578.80/x
  3. Step 3: Cross multiply
    101,035.76x = 139,365.78 × 58,578.80
  4. Step 4: Simplify right side
    101,035.76x = 8,163,880,153.46
  5. Step 5: Solve for x
    x = 8,163,880,153.46/101,035.76
  6. Step 6: Final answer
    x = 80,801.89

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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.