Home / 105,461.55-145,537.16-57,715.29

Finding the Fourth Proportional to 105,461.55, 145,537.16 and 57,715.29

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Solution

The fourth proportional to 105,461.55, 145,537.16 and 57,715.29 is: 79,647.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,461.55 : 145,537.16 = 57,715.29 : x
  2. Step 2: Convert to fraction form
    105,461.55/145,537.16 = 57,715.29/x
  3. Step 3: Cross multiply
    105,461.55x = 145,537.16 × 57,715.29
  4. Step 4: Simplify right side
    105,461.55x = 8,399,719,106.60
  5. Step 5: Solve for x
    x = 8,399,719,106.60/105,461.55
  6. Step 6: Final answer
    x = 79,647.22

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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.