Home / 87,856.40-121,242.02-47,570.64

Finding the Fourth Proportional to 87,856.40, 121,242.02 and 47,570.64

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Solution

The fourth proportional to 87,856.40, 121,242.02 and 47,570.64 is: 65,647.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.40 : 121,242.02 = 47,570.64 : x
  2. Step 2: Convert to fraction form
    87,856.40/121,242.02 = 47,570.64/x
  3. Step 3: Cross multiply
    87,856.40x = 121,242.02 × 47,570.64
  4. Step 4: Simplify right side
    87,856.40x = 5,767,560,486.29
  5. Step 5: Solve for x
    x = 5,767,560,486.29/87,856.40
  6. Step 6: Final answer
    x = 65,647.58

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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.