Home / 77,378,218.84-106,781,938.23-42,570,162.01

Finding the Fourth Proportional to 77,378,218.84, 106,781,938.23 and 42,570,162.01

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Solution

The fourth proportional to 77,378,218.84, 106,781,938.23 and 42,570,162.01 is: 58,746,821.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,378,218.84 : 106,781,938.23 = 42,570,162.01 : x
  2. Step 2: Convert to fraction form
    77,378,218.84/106,781,938.23 = 42,570,162.01/x
  3. Step 3: Cross multiply
    77,378,218.84x = 106,781,938.23 × 42,570,162.01
  4. Step 4: Simplify right side
    77,378,218.84x = 4,545,724,410,192,913
  5. Step 5: Solve for x
    x = 4,545,724,410,192,913/77,378,218.84
  6. Step 6: Final answer
    x = 58,746,821.50

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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.