Home / 91,780.77-126,421.49-64,877.03

Finding the Fourth Proportional to 91,780.77, 126,421.49 and 64,877.03

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Solution

The fourth proportional to 91,780.77, 126,421.49 and 64,877.03 is: 89,363.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,780.77 : 126,421.49 = 64,877.03 : x
  2. Step 2: Convert to fraction form
    91,780.77/126,421.49 = 64,877.03/x
  3. Step 3: Cross multiply
    91,780.77x = 126,421.49 × 64,877.03
  4. Step 4: Simplify right side
    91,780.77x = 8,201,850,799.37
  5. Step 5: Solve for x
    x = 8,201,850,799.37/91,780.77
  6. Step 6: Final answer
    x = 89,363.50

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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.