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Finding the Fourth Proportional to 68,952,854.80, 103,429,282.20 and 60,449,798.80

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Solution

The fourth proportional to 68,952,854.80, 103,429,282.20 and 60,449,798.80 is: 90,674,698.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,952,854.80 : 103,429,282.20 = 60,449,798.80 : x
  2. Step 2: Convert to fraction form
    68,952,854.80/103,429,282.20 = 60,449,798.80/x
  3. Step 3: Cross multiply
    68,952,854.80x = 103,429,282.20 × 60,449,798.80
  4. Step 4: Simplify right side
    68,952,854.80x = 6,252,279,299,018,421
  5. Step 5: Solve for x
    x = 6,252,279,299,018,421/68,952,854.80
  6. Step 6: Final answer
    x = 90,674,698.20

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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.