Home / 87,254.28-120,407.63-53,319.51

Finding the Fourth Proportional to 87,254.28, 120,407.63 and 53,319.51

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Solution

The fourth proportional to 87,254.28, 120,407.63 and 53,319.51 is: 73,578.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,254.28 : 120,407.63 = 53,319.51 : x
  2. Step 2: Convert to fraction form
    87,254.28/120,407.63 = 53,319.51/x
  3. Step 3: Cross multiply
    87,254.28x = 120,407.63 × 53,319.51
  4. Step 4: Simplify right side
    87,254.28x = 6,420,075,565.26
  5. Step 5: Solve for x
    x = 6,420,075,565.26/87,254.28
  6. Step 6: Final answer
    x = 73,578.92

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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.