Home / 99,072.24-136,700.64-56,621.76

Finding the Fourth Proportional to 99,072.24, 136,700.64 and 56,621.76

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Solution

The fourth proportional to 99,072.24, 136,700.64 and 56,621.76 is: 78,127.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,072.24 : 136,700.64 = 56,621.76 : x
  2. Step 2: Convert to fraction form
    99,072.24/136,700.64 = 56,621.76/x
  3. Step 3: Cross multiply
    99,072.24x = 136,700.64 × 56,621.76
  4. Step 4: Simplify right side
    99,072.24x = 7,740,230,829.93
  5. Step 5: Solve for x
    x = 7,740,230,829.93/99,072.24
  6. Step 6: Final answer
    x = 78,127.14

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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.