Home / 98,130.72-135,438.12-57,842.16

Finding the Fourth Proportional to 98,130.72, 135,438.12 and 57,842.16

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Solution

The fourth proportional to 98,130.72, 135,438.12 and 57,842.16 is: 79,832.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,130.72 : 135,438.12 = 57,842.16 : x
  2. Step 2: Convert to fraction form
    98,130.72/135,438.12 = 57,842.16/x
  3. Step 3: Cross multiply
    98,130.72x = 135,438.12 × 57,842.16
  4. Step 4: Simplify right side
    98,130.72x = 7,834,033,407.14
  5. Step 5: Solve for x
    x = 7,834,033,407.14/98,130.72
  6. Step 6: Final answer
    x = 79,832.63

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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.