Home / 78,237,841.92-107,962,821.36-43,427,792.40

Finding the Fourth Proportional to 78,237,841.92, 107,962,821.36 and 43,427,792.40

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Solution

The fourth proportional to 78,237,841.92, 107,962,821.36 and 43,427,792.40 is: 59,927,355.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,237,841.92 : 107,962,821.36 = 43,427,792.40 : x
  2. Step 2: Convert to fraction form
    78,237,841.92/107,962,821.36 = 43,427,792.40/x
  3. Step 3: Cross multiply
    78,237,841.92x = 107,962,821.36 × 43,427,792.40
  4. Step 4: Simplify right side
    78,237,841.92x = 4,688,586,992,940,365
  5. Step 5: Solve for x
    x = 4,688,586,992,940,365/78,237,841.92
  6. Step 6: Final answer
    x = 59,927,355.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.