Home / 79,081,998.40-118,640,884.53-42,689,607.62

Finding the Fourth Proportional to 79,081,998.40, 118,640,884.53 and 42,689,607.62

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Solution

The fourth proportional to 79,081,998.40, 118,640,884.53 and 42,689,607.62 is: 64,044,067.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,081,998.40 : 118,640,884.53 = 42,689,607.62 : x
  2. Step 2: Convert to fraction form
    79,081,998.40/118,640,884.53 = 42,689,607.62/x
  3. Step 3: Cross multiply
    79,081,998.40x = 118,640,884.53 × 42,689,607.62
  4. Step 4: Simplify right side
    79,081,998.40x = 5,064,732,808,275,428
  5. Step 5: Solve for x
    x = 5,064,732,808,275,428/79,081,998.40
  6. Step 6: Final answer
    x = 64,044,067.05

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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.