Home / 99,430.53-137,214.18-56,989.11

Finding the Fourth Proportional to 99,430.53, 137,214.18 and 56,989.11

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Solution

The fourth proportional to 99,430.53, 137,214.18 and 56,989.11 is: 78,645.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,430.53 : 137,214.18 = 56,989.11 : x
  2. Step 2: Convert to fraction form
    99,430.53/137,214.18 = 56,989.11/x
  3. Step 3: Cross multiply
    99,430.53x = 137,214.18 × 56,989.11
  4. Step 4: Simplify right side
    99,430.53x = 7,819,713,997.58
  5. Step 5: Solve for x
    x = 7,819,713,997.58/99,430.53
  6. Step 6: Final answer
    x = 78,645.00

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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.