Home / 85,409,622.40-128,114,433.60-31,545,788.80

Finding the Fourth Proportional to 85,409,622.40, 128,114,433.60 and 31,545,788.80

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Solution

The fourth proportional to 85,409,622.40, 128,114,433.60 and 31,545,788.80 is: 47,318,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,409,622.40 : 128,114,433.60 = 31,545,788.80 : x
  2. Step 2: Convert to fraction form
    85,409,622.40/128,114,433.60 = 31,545,788.80/x
  3. Step 3: Cross multiply
    85,409,622.40x = 128,114,433.60 × 31,545,788.80
  4. Step 4: Simplify right side
    85,409,622.40x = 4,041,470,864,577,223.50
  5. Step 5: Solve for x
    x = 4,041,470,864,577,223.50/85,409,622.40
  6. Step 6: Final answer
    x = 47,318,683.20

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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.