Home / 78,781,666.72-118,380,326.64-42,416,943.52

Finding the Fourth Proportional to 78,781,666.72, 118,380,326.64 and 42,416,943.52

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Solution

The fourth proportional to 78,781,666.72, 118,380,326.64 and 42,416,943.52 is: 63,737,311.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,781,666.72 : 118,380,326.64 = 42,416,943.52 : x
  2. Step 2: Convert to fraction form
    78,781,666.72/118,380,326.64 = 42,416,943.52/x
  3. Step 3: Cross multiply
    78,781,666.72x = 118,380,326.64 × 42,416,943.52
  4. Step 4: Simplify right side
    78,781,666.72x = 5,021,331,628,968,032
  5. Step 5: Solve for x
    x = 5,021,331,628,968,032/78,781,666.72
  6. Step 6: Final answer
    x = 63,737,311.46

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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.