Home / 85,407,970.22-128,085,459.15-30,813,458.66

Finding the Fourth Proportional to 85,407,970.22, 128,085,459.15 and 30,813,458.66

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Solution

The fourth proportional to 85,407,970.22, 128,085,459.15 and 30,813,458.66 is: 46,210,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,407,970.22 : 128,085,459.15 = 30,813,458.66 : x
  2. Step 2: Convert to fraction form
    85,407,970.22/128,085,459.15 = 30,813,458.66/x
  3. Step 3: Cross multiply
    85,407,970.22x = 128,085,459.15 × 30,813,458.66
  4. Step 4: Simplify right side
    85,407,970.22x = 3,946,756,000,465,644
  5. Step 5: Solve for x
    x = 3,946,756,000,465,644/85,407,970.22
  6. Step 6: Final answer
    x = 46,210,628.71

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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.