Home / 75,385.35-113,619.89-64,980.95

Finding the Fourth Proportional to 75,385.35, 113,619.89 and 64,980.95

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Solution

The fourth proportional to 75,385.35, 113,619.89 and 64,980.95 is: 97,938.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,385.35 : 113,619.89 = 64,980.95 : x
  2. Step 2: Convert to fraction form
    75,385.35/113,619.89 = 64,980.95/x
  3. Step 3: Cross multiply
    75,385.35x = 113,619.89 × 64,980.95
  4. Step 4: Simplify right side
    75,385.35x = 7,383,127,985.45
  5. Step 5: Solve for x
    x = 7,383,127,985.45/75,385.35
  6. Step 6: Final answer
    x = 97,938.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.