Home / 72,134.13-99,543.27-40,303.27

Finding the Fourth Proportional to 72,134.13, 99,543.27 and 40,303.27

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Solution

The fourth proportional to 72,134.13, 99,543.27 and 40,303.27 is: 55,617.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,134.13 : 99,543.27 = 40,303.27 : x
  2. Step 2: Convert to fraction form
    72,134.13/99,543.27 = 40,303.27/x
  3. Step 3: Cross multiply
    72,134.13x = 99,543.27 × 40,303.27
  4. Step 4: Simplify right side
    72,134.13x = 4,011,919,287.49
  5. Step 5: Solve for x
    x = 4,011,919,287.49/72,134.13
  6. Step 6: Final answer
    x = 55,617.49

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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.