Home / 88,291.34-121,761.33-65,686.94

Finding the Fourth Proportional to 88,291.34, 121,761.33 and 65,686.94

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Solution

The fourth proportional to 88,291.34, 121,761.33 and 65,686.94 is: 90,587.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,291.34 : 121,761.33 = 65,686.94 : x
  2. Step 2: Convert to fraction form
    88,291.34/121,761.33 = 65,686.94/x
  3. Step 3: Cross multiply
    88,291.34x = 121,761.33 × 65,686.94
  4. Step 4: Simplify right side
    88,291.34x = 7,998,129,178.03
  5. Step 5: Solve for x
    x = 7,998,129,178.03/88,291.34
  6. Step 6: Final answer
    x = 90,587.92

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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.