Home / 43,470,007.20-65,205,010.80-39,140,330.40

Finding the Fourth Proportional to 43,470,007.20, 65,205,010.80 and 39,140,330.40

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Solution

The fourth proportional to 43,470,007.20, 65,205,010.80 and 39,140,330.40 is: 58,710,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,470,007.20 : 65,205,010.80 = 39,140,330.40 : x
  2. Step 2: Convert to fraction form
    43,470,007.20/65,205,010.80 = 39,140,330.40/x
  3. Step 3: Cross multiply
    43,470,007.20x = 65,205,010.80 × 39,140,330.40
  4. Step 4: Simplify right side
    43,470,007.20x = 2,552,145,666,447,568
  5. Step 5: Solve for x
    x = 2,552,145,666,447,568/43,470,007.20
  6. Step 6: Final answer
    x = 58,710,495.60

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Similar ratio
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1.5x scale

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.