Home / 81,692.98-122,547.02-31,776.86

Finding the Fourth Proportional to 81,692.98, 122,547.02 and 31,776.86

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Solution

The fourth proportional to 81,692.98, 122,547.02 and 31,776.86 is: 47,668.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,692.98 : 122,547.02 = 31,776.86 : x
  2. Step 2: Convert to fraction form
    81,692.98/122,547.02 = 31,776.86/x
  3. Step 3: Cross multiply
    81,692.98x = 122,547.02 × 31,776.86
  4. Step 4: Simplify right side
    81,692.98x = 3,894,159,339.07
  5. Step 5: Solve for x
    x = 3,894,159,339.07/81,692.98
  6. Step 6: Final answer
    x = 47,668.23

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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.