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Finding the Fourth Proportional to 98,345.90, 135,710.34 and 58,057.58

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Solution

The fourth proportional to 98,345.90, 135,710.34 and 58,057.58 is: 80,115.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,345.90 : 135,710.34 = 58,057.58 : x
  2. Step 2: Convert to fraction form
    98,345.90/135,710.34 = 58,057.58/x
  3. Step 3: Cross multiply
    98,345.90x = 135,710.34 × 58,057.58
  4. Step 4: Simplify right side
    98,345.90x = 7,879,013,242.83
  5. Step 5: Solve for x
    x = 7,879,013,242.83/98,345.90
  6. Step 6: Final answer
    x = 80,115.32

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1.5x scale

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.