Home / 87,856.42-121,241.67-47,570.20

Finding the Fourth Proportional to 87,856.42, 121,241.67 and 47,570.20

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Solution

The fourth proportional to 87,856.42, 121,241.67 and 47,570.20 is: 65,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.42 : 121,241.67 = 47,570.20 : x
  2. Step 2: Convert to fraction form
    87,856.42/121,241.67 = 47,570.20/x
  3. Step 3: Cross multiply
    87,856.42x = 121,241.67 × 47,570.20
  4. Step 4: Simplify right side
    87,856.42x = 5,767,490,490.23
  5. Step 5: Solve for x
    x = 5,767,490,490.23/87,856.42
  6. Step 6: Final answer
    x = 65,646.77

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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.