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Finding the Fourth Proportional to 99,910.40, 137,885.10 and 57,482.60

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Solution

The fourth proportional to 99,910.40, 137,885.10 and 57,482.60 is: 79,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,910.40 : 137,885.10 = 57,482.60 : x
  2. Step 2: Convert to fraction form
    99,910.40/137,885.10 = 57,482.60/x
  3. Step 3: Cross multiply
    99,910.40x = 137,885.10 × 57,482.60
  4. Step 4: Simplify right side
    99,910.40x = 7,925,994,049.26
  5. Step 5: Solve for x
    x = 7,925,994,049.26/99,910.40
  6. Step 6: Final answer
    x = 79,331.02

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1.5x scale

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.