Home / 72,235.36-99,644.68-42,017.28

Finding the Fourth Proportional to 72,235.36, 99,644.68 and 42,017.28

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Solution

The fourth proportional to 72,235.36, 99,644.68 and 42,017.28 is: 57,960.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,235.36 : 99,644.68 = 42,017.28 : x
  2. Step 2: Convert to fraction form
    72,235.36/99,644.68 = 42,017.28/x
  3. Step 3: Cross multiply
    72,235.36x = 99,644.68 × 42,017.28
  4. Step 4: Simplify right side
    72,235.36x = 4,186,798,420.07
  5. Step 5: Solve for x
    x = 4,186,798,420.07/72,235.36
  6. Step 6: Final answer
    x = 57,960.51

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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.