Home / 72,102.21-99,509.52-59,981.30

Finding the Fourth Proportional to 72,102.21, 99,509.52 and 59,981.30

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Solution

The fourth proportional to 72,102.21, 99,509.52 and 59,981.30 is: 82,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,102.21 : 99,509.52 = 59,981.30 : x
  2. Step 2: Convert to fraction form
    72,102.21/99,509.52 = 59,981.30/x
  3. Step 3: Cross multiply
    72,102.21x = 99,509.52 × 59,981.30
  4. Step 4: Simplify right side
    72,102.21x = 5,968,710,371.98
  5. Step 5: Solve for x
    x = 5,968,710,371.98/72,102.21
  6. Step 6: Final answer
    x = 82,781.24

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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.