Home / 85,968,568.05-128,952,852.08-74,771,128.05

Finding the Fourth Proportional to 85,968,568.05, 128,952,852.08 and 74,771,128.05

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Solution

The fourth proportional to 85,968,568.05, 128,952,852.08 and 74,771,128.05 is: 112,156,692.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,568.05 : 128,952,852.08 = 74,771,128.05 : x
  2. Step 2: Convert to fraction form
    85,968,568.05/128,952,852.08 = 74,771,128.05/x
  3. Step 3: Cross multiply
    85,968,568.05x = 128,952,852.08 × 74,771,128.05
  4. Step 4: Simplify right side
    85,968,568.05x = 9,641,950,214,912,534
  5. Step 5: Solve for x
    x = 9,641,950,214,912,534/85,968,568.05
  6. Step 6: Final answer
    x = 112,156,692.08

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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.