Home / 105,557.14-145,670.09-57,812.50

Finding the Fourth Proportional to 105,557.14, 145,670.09 and 57,812.50

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Solution

The fourth proportional to 105,557.14, 145,670.09 and 57,812.50 is: 79,781.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,557.14 : 145,670.09 = 57,812.50 : x
  2. Step 2: Convert to fraction form
    105,557.14/145,670.09 = 57,812.50/x
  3. Step 3: Cross multiply
    105,557.14x = 145,670.09 × 57,812.50
  4. Step 4: Simplify right side
    105,557.14x = 8,421,552,078.13
  5. Step 5: Solve for x
    x = 8,421,552,078.13/105,557.14
  6. Step 6: Final answer
    x = 79,781.93

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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.