Home / 105,570.16-145,680.60-57,814

Finding the Fourth Proportional to 105,570.16, 145,680.60 and 57,814

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Solution

The fourth proportional to 105,570.16, 145,680.60 and 57,814 is: 79,779.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,570.16 : 145,680.60 = 57,814 : x
  2. Step 2: Convert to fraction form
    105,570.16/145,680.60 = 57,814/x
  3. Step 3: Cross multiply
    105,570.16x = 145,680.60 × 57,814
  4. Step 4: Simplify right side
    105,570.16x = 8,422,378,208.40
  5. Step 5: Solve for x
    x = 8,422,378,208.40/105,570.16
  6. Step 6: Final answer
    x = 79,779.91

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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.