Home / 81,661,521.30-122,492,281.95-36,223,315.80

Finding the Fourth Proportional to 81,661,521.30, 122,492,281.95 and 36,223,315.80

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Solution

The fourth proportional to 81,661,521.30, 122,492,281.95 and 36,223,315.80 is: 54,334,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,661,521.30 : 122,492,281.95 = 36,223,315.80 : x
  2. Step 2: Convert to fraction form
    81,661,521.30/122,492,281.95 = 36,223,315.80/x
  3. Step 3: Cross multiply
    81,661,521.30x = 122,492,281.95 × 36,223,315.80
  4. Step 4: Simplify right side
    81,661,521.30x = 4,437,076,612,137,489.50
  5. Step 5: Solve for x
    x = 4,437,076,612,137,489.50/81,661,521.30
  6. Step 6: Final answer
    x = 54,334,973.70

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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.