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Finding the Fourth Proportional to 94,752,012.80, 142,128,019.20 and 40,899,324.80

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Solution

The fourth proportional to 94,752,012.80, 142,128,019.20 and 40,899,324.80 is: 61,348,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,752,012.80 : 142,128,019.20 = 40,899,324.80 : x
  2. Step 2: Convert to fraction form
    94,752,012.80/142,128,019.20 = 40,899,324.80/x
  3. Step 3: Cross multiply
    94,752,012.80x = 142,128,019.20 × 40,899,324.80
  4. Step 4: Simplify right side
    94,752,012.80x = 5,812,940,020,441,435
  5. Step 5: Solve for x
    x = 5,812,940,020,441,435/94,752,012.80
  6. Step 6: Final answer
    x = 61,348,987.20

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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.