Home / 87,218.10-130,499.10-57,693.60

Finding the Fourth Proportional to 87,218.10, 130,499.10 and 57,693.60

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Solution

The fourth proportional to 87,218.10, 130,499.10 and 57,693.60 is: 86,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,218.10 : 130,499.10 = 57,693.60 : x
  2. Step 2: Convert to fraction form
    87,218.10/130,499.10 = 57,693.60/x
  3. Step 3: Cross multiply
    87,218.10x = 130,499.10 × 57,693.60
  4. Step 4: Simplify right side
    87,218.10x = 7,528,962,875.76
  5. Step 5: Solve for x
    x = 7,528,962,875.76/87,218.10
  6. Step 6: Final answer
    x = 86,323.40

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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.