Home / 81,017.07-121,525.64-21,852.77

Finding the Fourth Proportional to 81,017.07, 121,525.64 and 21,852.77

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Solution

The fourth proportional to 81,017.07, 121,525.64 and 21,852.77 is: 32,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,017.07 : 121,525.64 = 21,852.77 : x
  2. Step 2: Convert to fraction form
    81,017.07/121,525.64 = 21,852.77/x
  3. Step 3: Cross multiply
    81,017.07x = 121,525.64 × 21,852.77
  4. Step 4: Simplify right side
    81,017.07x = 2,655,671,143.13
  5. Step 5: Solve for x
    x = 2,655,671,143.13/81,017.07
  6. Step 6: Final answer
    x = 32,779.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.