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Finding the Fourth Proportional to 72,400.70, 108,601.05 and 61,356.35

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Solution

The fourth proportional to 72,400.70, 108,601.05 and 61,356.35 is: 92,034.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400.70 : 108,601.05 = 61,356.35 : x
  2. Step 2: Convert to fraction form
    72,400.70/108,601.05 = 61,356.35/x
  3. Step 3: Cross multiply
    72,400.70x = 108,601.05 × 61,356.35
  4. Step 4: Simplify right side
    72,400.70x = 6,663,364,034.17
  5. Step 5: Solve for x
    x = 6,663,364,034.17/72,400.70
  6. Step 6: Final answer
    x = 92,034.53

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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.