Home / 85,517,561.70-128,276,342.55-74,755,881.45

Finding the Fourth Proportional to 85,517,561.70, 128,276,342.55 and 74,755,881.45

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Solution

The fourth proportional to 85,517,561.70, 128,276,342.55 and 74,755,881.45 is: 112,133,822.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517,561.70 : 128,276,342.55 = 74,755,881.45 : x
  2. Step 2: Convert to fraction form
    85,517,561.70/128,276,342.55 = 74,755,881.45/x
  3. Step 3: Cross multiply
    85,517,561.70x = 128,276,342.55 × 74,755,881.45
  4. Step 4: Simplify right side
    85,517,561.70x = 9,589,411,056,507,390
  5. Step 5: Solve for x
    x = 9,589,411,056,507,390/85,517,561.70
  6. Step 6: Final answer
    x = 112,133,822.18

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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.