Home / 78,374.02-108,156.95-42,564.73

Finding the Fourth Proportional to 78,374.02, 108,156.95 and 42,564.73

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Solution

The fourth proportional to 78,374.02, 108,156.95 and 42,564.73 is: 58,739.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,374.02 : 108,156.95 = 42,564.73 : x
  2. Step 2: Convert to fraction form
    78,374.02/108,156.95 = 42,564.73/x
  3. Step 3: Cross multiply
    78,374.02x = 108,156.95 × 42,564.73
  4. Step 4: Simplify right side
    78,374.02x = 4,603,671,296.75
  5. Step 5: Solve for x
    x = 4,603,671,296.75/78,374.02
  6. Step 6: Final answer
    x = 58,739.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.