Home / 72,681,587.52-109,009,436.64-28,958,681.64

Finding the Fourth Proportional to 72,681,587.52, 109,009,436.64 and 28,958,681.64

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Solution

The fourth proportional to 72,681,587.52, 109,009,436.64 and 28,958,681.64 is: 43,432,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,681,587.52 : 109,009,436.64 = 28,958,681.64 : x
  2. Step 2: Convert to fraction form
    72,681,587.52/109,009,436.64 = 28,958,681.64/x
  3. Step 3: Cross multiply
    72,681,587.52x = 109,009,436.64 × 28,958,681.64
  4. Step 4: Simplify right side
    72,681,587.52x = 3,156,769,571,413,511.50
  5. Step 5: Solve for x
    x = 3,156,769,571,413,511.50/72,681,587.52
  6. Step 6: Final answer
    x = 43,432,864.90

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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.