Home / 85,407,969.22-128,085,457.65-30,813,457.66

Finding the Fourth Proportional to 85,407,969.22, 128,085,457.65 and 30,813,457.66

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Solution

The fourth proportional to 85,407,969.22, 128,085,457.65 and 30,813,457.66 is: 46,210,627.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,407,969.22 : 128,085,457.65 = 30,813,457.66 : x
  2. Step 2: Convert to fraction form
    85,407,969.22/128,085,457.65 = 30,813,457.66/x
  3. Step 3: Cross multiply
    85,407,969.22x = 128,085,457.65 × 30,813,457.66
  4. Step 4: Simplify right side
    85,407,969.22x = 3,946,755,825,724,233.50
  5. Step 5: Solve for x
    x = 3,946,755,825,724,233.50/85,407,969.22
  6. Step 6: Final answer
    x = 46,210,627.20

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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.