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Finding the Fourth Proportional to 72,598.65, 100,187.31 and 40,335.33

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Solution

The fourth proportional to 72,598.65, 100,187.31 and 40,335.33 is: 55,663.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,598.65 : 100,187.31 = 40,335.33 : x
  2. Step 2: Convert to fraction form
    72,598.65/100,187.31 = 40,335.33/x
  3. Step 3: Cross multiply
    72,598.65x = 100,187.31 × 40,335.33
  4. Step 4: Simplify right side
    72,598.65x = 4,041,088,210.66
  5. Step 5: Solve for x
    x = 4,041,088,210.66/72,598.65
  6. Step 6: Final answer
    x = 55,663.41

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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.