Home / 99,770.48-137,677.75-56,744.16

Finding the Fourth Proportional to 99,770.48, 137,677.75 and 56,744.16

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Solution

The fourth proportional to 99,770.48, 137,677.75 and 56,744.16 is: 78,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,770.48 : 137,677.75 = 56,744.16 : x
  2. Step 2: Convert to fraction form
    99,770.48/137,677.75 = 56,744.16/x
  3. Step 3: Cross multiply
    99,770.48x = 137,677.75 × 56,744.16
  4. Step 4: Simplify right side
    99,770.48x = 7,812,408,132.58
  5. Step 5: Solve for x
    x = 7,812,408,132.58/99,770.48
  6. Step 6: Final answer
    x = 78,303.80

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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.