Home / 85,959,614.40-128,939,421.60-51,522,237.60

Finding the Fourth Proportional to 85,959,614.40, 128,939,421.60 and 51,522,237.60

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Solution

The fourth proportional to 85,959,614.40, 128,939,421.60 and 51,522,237.60 is: 77,283,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,959,614.40 : 128,939,421.60 = 51,522,237.60 : x
  2. Step 2: Convert to fraction form
    85,959,614.40/128,939,421.60 = 51,522,237.60/x
  3. Step 3: Cross multiply
    85,959,614.40x = 128,939,421.60 × 51,522,237.60
  4. Step 4: Simplify right side
    85,959,614.40x = 6,643,247,515,681,772
  5. Step 5: Solve for x
    x = 6,643,247,515,681,772/85,959,614.40
  6. Step 6: Final answer
    x = 77,283,356.40

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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.