Home / 99,579.84-137,396.08-56,549.76

Finding the Fourth Proportional to 99,579.84, 137,396.08 and 56,549.76

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Solution

The fourth proportional to 99,579.84, 137,396.08 and 56,549.76 is: 78,024.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,579.84 : 137,396.08 = 56,549.76 : x
  2. Step 2: Convert to fraction form
    99,579.84/137,396.08 = 56,549.76/x
  3. Step 3: Cross multiply
    99,579.84x = 137,396.08 × 56,549.76
  4. Step 4: Simplify right side
    99,579.84x = 7,769,715,348.94
  5. Step 5: Solve for x
    x = 7,769,715,348.94/99,579.84
  6. Step 6: Final answer
    x = 78,024.98

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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.