Home / 72,143.36-99,569.45-45,289.73

Finding the Fourth Proportional to 72,143.36, 99,569.45 and 45,289.73

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Solution

The fourth proportional to 72,143.36, 99,569.45 and 45,289.73 is: 62,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,143.36 : 99,569.45 = 45,289.73 : x
  2. Step 2: Convert to fraction form
    72,143.36/99,569.45 = 45,289.73/x
  3. Step 3: Cross multiply
    72,143.36x = 99,569.45 × 45,289.73
  4. Step 4: Simplify right side
    72,143.36x = 4,509,473,868.90
  5. Step 5: Solve for x
    x = 4,509,473,868.90/72,143.36
  6. Step 6: Final answer
    x = 62,507.12

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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.