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Finding the Fourth Proportional to 72,703.49, 100,329.75 and 40,437.77

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Solution

The fourth proportional to 72,703.49, 100,329.75 and 40,437.77 is: 55,803.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,703.49 : 100,329.75 = 40,437.77 : x
  2. Step 2: Convert to fraction form
    72,703.49/100,329.75 = 40,437.77/x
  3. Step 3: Cross multiply
    72,703.49x = 100,329.75 × 40,437.77
  4. Step 4: Simplify right side
    72,703.49x = 4,057,110,853.01
  5. Step 5: Solve for x
    x = 4,057,110,853.01/72,703.49
  6. Step 6: Final answer
    x = 55,803.53

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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.