Home / 70,421,708.80-105,533,030.40-43,415,142.40

Finding the Fourth Proportional to 70,421,708.80, 105,533,030.40 and 43,415,142.40

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Solution

The fourth proportional to 70,421,708.80, 105,533,030.40 and 43,415,142.40 is: 65,061,351.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,421,708.80 : 105,533,030.40 = 43,415,142.40 : x
  2. Step 2: Convert to fraction form
    70,421,708.80/105,533,030.40 = 43,415,142.40/x
  3. Step 3: Cross multiply
    70,421,708.80x = 105,533,030.40 × 43,415,142.40
  4. Step 4: Simplify right side
    70,421,708.80x = 4,581,731,542,719,529
  5. Step 5: Solve for x
    x = 4,581,731,542,719,529/70,421,708.80
  6. Step 6: Final answer
    x = 65,061,351.40

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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.