Home / 72,168,619.80-99,496,347.12-57,333,168.48

Finding the Fourth Proportional to 72,168,619.80, 99,496,347.12 and 57,333,168.48

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Solution

The fourth proportional to 72,168,619.80, 99,496,347.12 and 57,333,168.48 is: 79,043,230.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,168,619.80 : 99,496,347.12 = 57,333,168.48 : x
  2. Step 2: Convert to fraction form
    72,168,619.80/99,496,347.12 = 57,333,168.48/x
  3. Step 3: Cross multiply
    72,168,619.80x = 99,496,347.12 × 57,333,168.48
  4. Step 4: Simplify right side
    72,168,619.80x = 5,704,440,832,575,523
  5. Step 5: Solve for x
    x = 5,704,440,832,575,523/72,168,619.80
  6. Step 6: Final answer
    x = 79,043,230.26

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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.