Home / 72,134.63-99,543.96-40,303.77

Finding the Fourth Proportional to 72,134.63, 99,543.96 and 40,303.77

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Solution

The fourth proportional to 72,134.63, 99,543.96 and 40,303.77 is: 55,618.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,134.63 : 99,543.96 = 40,303.77 : x
  2. Step 2: Convert to fraction form
    72,134.63/99,543.96 = 40,303.77/x
  3. Step 3: Cross multiply
    72,134.63x = 99,543.96 × 40,303.77
  4. Step 4: Simplify right side
    72,134.63x = 4,011,996,868.73
  5. Step 5: Solve for x
    x = 4,011,996,868.73/72,134.63
  6. Step 6: Final answer
    x = 55,618.18

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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.