Home / 78,598.02-117,899.58-31,221.92

Finding the Fourth Proportional to 78,598.02, 117,899.58 and 31,221.92

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Solution

The fourth proportional to 78,598.02, 117,899.58 and 31,221.92 is: 46,833.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,598.02 : 117,899.58 = 31,221.92 : x
  2. Step 2: Convert to fraction form
    78,598.02/117,899.58 = 31,221.92/x
  3. Step 3: Cross multiply
    78,598.02x = 117,899.58 × 31,221.92
  4. Step 4: Simplify right side
    78,598.02x = 3,681,051,254.79
  5. Step 5: Solve for x
    x = 3,681,051,254.79/78,598.02
  6. Step 6: Final answer
    x = 46,833.89

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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.