Home / 85,824,493.80-128,736,740.70-28,325,639.40

Finding the Fourth Proportional to 85,824,493.80, 128,736,740.70 and 28,325,639.40

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Solution

The fourth proportional to 85,824,493.80, 128,736,740.70 and 28,325,639.40 is: 42,488,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824,493.80 : 128,736,740.70 = 28,325,639.40 : x
  2. Step 2: Convert to fraction form
    85,824,493.80/128,736,740.70 = 28,325,639.40/x
  3. Step 3: Cross multiply
    85,824,493.80x = 128,736,740.70 × 28,325,639.40
  4. Step 4: Simplify right side
    85,824,493.80x = 3,646,550,494,599,503.50
  5. Step 5: Solve for x
    x = 3,646,550,494,599,503.50/85,824,493.80
  6. Step 6: Final answer
    x = 42,488,459.10

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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.