Home / 79,430,396.85-109,360,555.79-67,781,210.13

Finding the Fourth Proportional to 79,430,396.85, 109,360,555.79 and 67,781,210.13

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Solution

The fourth proportional to 79,430,396.85, 109,360,555.79 and 67,781,210.13 is: 93,321,840.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,430,396.85 : 109,360,555.79 = 67,781,210.13 : x
  2. Step 2: Convert to fraction form
    79,430,396.85/109,360,555.79 = 67,781,210.13/x
  3. Step 3: Cross multiply
    79,430,396.85x = 109,360,555.79 × 67,781,210.13
  4. Step 4: Simplify right side
    79,430,396.85x = 7,412,590,811,596,671
  5. Step 5: Solve for x
    x = 7,412,590,811,596,671/79,430,396.85
  6. Step 6: Final answer
    x = 93,321,840.32

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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.