Home / 105,490.07-145,576.44-57,746.43

Finding the Fourth Proportional to 105,490.07, 145,576.44 and 57,746.43

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Solution

The fourth proportional to 105,490.07, 145,576.44 and 57,746.43 is: 79,690.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,490.07 : 145,576.44 = 57,746.43 : x
  2. Step 2: Convert to fraction form
    105,490.07/145,576.44 = 57,746.43/x
  3. Step 3: Cross multiply
    105,490.07x = 145,576.44 × 57,746.43
  4. Step 4: Simplify right side
    105,490.07x = 8,406,519,702.11
  5. Step 5: Solve for x
    x = 8,406,519,702.11/105,490.07
  6. Step 6: Final answer
    x = 79,690.16

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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.