Home / 66,549.20-99,823.80-39,977.15

Finding the Fourth Proportional to 66,549.20, 99,823.80 and 39,977.15

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Solution

The fourth proportional to 66,549.20, 99,823.80 and 39,977.15 is: 59,965.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,549.20 : 99,823.80 = 39,977.15 : x
  2. Step 2: Convert to fraction form
    66,549.20/99,823.80 = 39,977.15/x
  3. Step 3: Cross multiply
    66,549.20x = 99,823.80 × 39,977.15
  4. Step 4: Simplify right side
    66,549.20x = 3,990,671,026.17
  5. Step 5: Solve for x
    x = 3,990,671,026.17/66,549.20
  6. Step 6: Final answer
    x = 59,965.73

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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.