Home / 85,970,404.80-128,955,607.20-74,772,964.80

Finding the Fourth Proportional to 85,970,404.80, 128,955,607.20 and 74,772,964.80

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Solution

The fourth proportional to 85,970,404.80, 128,955,607.20 and 74,772,964.80 is: 112,159,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,970,404.80 : 128,955,607.20 = 74,772,964.80 : x
  2. Step 2: Convert to fraction form
    85,970,404.80/128,955,607.20 = 74,772,964.80/x
  3. Step 3: Cross multiply
    85,970,404.80x = 128,955,607.20 × 74,772,964.80
  4. Step 4: Simplify right side
    85,970,404.80x = 9,642,393,077,928,226
  5. Step 5: Solve for x
    x = 9,642,393,077,928,226/85,970,404.80
  6. Step 6: Final answer
    x = 112,159,447.20

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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.