Home / 105,625.28-145,762.86-57,880.46

Finding the Fourth Proportional to 105,625.28, 145,762.86 and 57,880.46

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Solution

The fourth proportional to 105,625.28, 145,762.86 and 57,880.46 is: 79,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,625.28 : 145,762.86 = 57,880.46 : x
  2. Step 2: Convert to fraction form
    105,625.28/145,762.86 = 57,880.46/x
  3. Step 3: Cross multiply
    105,625.28x = 145,762.86 × 57,880.46
  4. Step 4: Simplify right side
    105,625.28x = 8,436,821,387.72
  5. Step 5: Solve for x
    x = 8,436,821,387.72/105,625.28
  6. Step 6: Final answer
    x = 79,875.02

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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.