Home / 78,770.28-118,154.81-19,605.56

Finding the Fourth Proportional to 78,770.28, 118,154.81 and 19,605.56

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Solution

The fourth proportional to 78,770.28, 118,154.81 and 19,605.56 is: 29,408.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,770.28 : 118,154.81 = 19,605.56 : x
  2. Step 2: Convert to fraction form
    78,770.28/118,154.81 = 19,605.56/x
  3. Step 3: Cross multiply
    78,770.28x = 118,154.81 × 19,605.56
  4. Step 4: Simplify right side
    78,770.28x = 2,316,490,674.98
  5. Step 5: Solve for x
    x = 2,316,490,674.98/78,770.28
  6. Step 6: Final answer
    x = 29,408.18

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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.