Home / 87,201.85-130,802.78-42,857.05

Finding the Fourth Proportional to 87,201.85, 130,802.78 and 42,857.05

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Solution

The fourth proportional to 87,201.85, 130,802.78 and 42,857.05 is: 64,285.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,201.85 : 130,802.78 = 42,857.05 : x
  2. Step 2: Convert to fraction form
    87,201.85/130,802.78 = 42,857.05/x
  3. Step 3: Cross multiply
    87,201.85x = 130,802.78 × 42,857.05
  4. Step 4: Simplify right side
    87,201.85x = 5,605,821,068.31
  5. Step 5: Solve for x
    x = 5,605,821,068.31/87,201.85
  6. Step 6: Final answer
    x = 64,285.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.