Home / 78,273,430.12-117,308,008.86-43,728,436.52

Finding the Fourth Proportional to 78,273,430.12, 117,308,008.86 and 43,728,436.52

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Solution

The fourth proportional to 78,273,430.12, 117,308,008.86 and 43,728,436.52 is: 65,535,595.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,273,430.12 : 117,308,008.86 = 43,728,436.52 : x
  2. Step 2: Convert to fraction form
    78,273,430.12/117,308,008.86 = 43,728,436.52/x
  3. Step 3: Cross multiply
    78,273,430.12x = 117,308,008.86 × 43,728,436.52
  4. Step 4: Simplify right side
    78,273,430.12x = 5,129,695,817,916,926
  5. Step 5: Solve for x
    x = 5,129,695,817,916,926/78,273,430.12
  6. Step 6: Final answer
    x = 65,535,595.03

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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.