Home / 85,824,330.40-128,736,495.60-31,960,496.80

Finding the Fourth Proportional to 85,824,330.40, 128,736,495.60 and 31,960,496.80

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Solution

The fourth proportional to 85,824,330.40, 128,736,495.60 and 31,960,496.80 is: 47,940,745.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824,330.40 : 128,736,495.60 = 31,960,496.80 : x
  2. Step 2: Convert to fraction form
    85,824,330.40/128,736,495.60 = 31,960,496.80/x
  3. Step 3: Cross multiply
    85,824,330.40x = 128,736,495.60 × 31,960,496.80
  4. Step 4: Simplify right side
    85,824,330.40x = 4,114,482,355,667,014
  5. Step 5: Solve for x
    x = 4,114,482,355,667,014/85,824,330.40
  6. Step 6: Final answer
    x = 47,940,745.20

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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.