Home / 87,855.42-121,240.29-47,569.20

Finding the Fourth Proportional to 87,855.42, 121,240.29 and 47,569.20

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Solution

The fourth proportional to 87,855.42, 121,240.29 and 47,569.20 is: 65,645.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.42 : 121,240.29 = 47,569.20 : x
  2. Step 2: Convert to fraction form
    87,855.42/121,240.29 = 47,569.20/x
  3. Step 3: Cross multiply
    87,855.42x = 121,240.29 × 47,569.20
  4. Step 4: Simplify right side
    87,855.42x = 5,767,303,603.07
  5. Step 5: Solve for x
    x = 5,767,303,603.07/87,855.42
  6. Step 6: Final answer
    x = 65,645.39

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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.