Home / 74,636,138.70-112,003,974.45-42,287,978.70

Finding the Fourth Proportional to 74,636,138.70, 112,003,974.45 and 42,287,978.70

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Solution

The fourth proportional to 74,636,138.70, 112,003,974.45 and 42,287,978.70 is: 63,460,165.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,636,138.70 : 112,003,974.45 = 42,287,978.70 : x
  2. Step 2: Convert to fraction form
    74,636,138.70/112,003,974.45 = 42,287,978.70/x
  3. Step 3: Cross multiply
    74,636,138.70x = 112,003,974.45 × 42,287,978.70
  4. Step 4: Simplify right side
    74,636,138.70x = 4,736,421,685,856,945
  5. Step 5: Solve for x
    x = 4,736,421,685,856,945/74,636,138.70
  6. Step 6: Final answer
    x = 63,460,165.12

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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.