Home / 87,919.12-121,328.40-47,633.16

Finding the Fourth Proportional to 87,919.12, 121,328.40 and 47,633.16

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Solution

The fourth proportional to 87,919.12, 121,328.40 and 47,633.16 is: 65,733.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,919.12 : 121,328.40 = 47,633.16 : x
  2. Step 2: Convert to fraction form
    87,919.12/121,328.40 = 47,633.16/x
  3. Step 3: Cross multiply
    87,919.12x = 121,328.40 × 47,633.16
  4. Step 4: Simplify right side
    87,919.12x = 5,779,255,089.74
  5. Step 5: Solve for x
    x = 5,779,255,089.74/87,919.12
  6. Step 6: Final answer
    x = 65,733.77

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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.