Home / 85,407,970.73-128,085,459.90-30,813,459.17

Finding the Fourth Proportional to 85,407,970.73, 128,085,459.90 and 30,813,459.17

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Solution

The fourth proportional to 85,407,970.73, 128,085,459.90 and 30,813,459.17 is: 46,210,629.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,407,970.73 : 128,085,459.90 = 30,813,459.17 : x
  2. Step 2: Convert to fraction form
    85,407,970.73/128,085,459.90 = 30,813,459.17/x
  3. Step 3: Cross multiply
    85,407,970.73x = 128,085,459.90 × 30,813,459.17
  4. Step 4: Simplify right side
    85,407,970.73x = 3,946,756,088,258,895
  5. Step 5: Solve for x
    x = 3,946,756,088,258,895/85,407,970.73
  6. Step 6: Final answer
    x = 46,210,629.46

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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.