Home / 85,536,007.10-128,304,010.65-53,287,379.90

Finding the Fourth Proportional to 85,536,007.10, 128,304,010.65 and 53,287,379.90

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Solution

The fourth proportional to 85,536,007.10, 128,304,010.65 and 53,287,379.90 is: 79,931,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,007.10 : 128,304,010.65 = 53,287,379.90 : x
  2. Step 2: Convert to fraction form
    85,536,007.10/128,304,010.65 = 53,287,379.90/x
  3. Step 3: Cross multiply
    85,536,007.10x = 128,304,010.65 × 53,287,379.90
  4. Step 4: Simplify right side
    85,536,007.10x = 6,836,984,558,200,196
  5. Step 5: Solve for x
    x = 6,836,984,558,200,196/85,536,007.10
  6. Step 6: Final answer
    x = 79,931,069.85

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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.