Home / 78,451.12-117,607.02-56,208.52

Finding the Fourth Proportional to 78,451.12, 117,607.02 and 56,208.52

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Solution

The fourth proportional to 78,451.12, 117,607.02 and 56,208.52 is: 84,262.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,451.12 : 117,607.02 = 56,208.52 : x
  2. Step 2: Convert to fraction form
    78,451.12/117,607.02 = 56,208.52/x
  3. Step 3: Cross multiply
    78,451.12x = 117,607.02 × 56,208.52
  4. Step 4: Simplify right side
    78,451.12x = 6,610,516,535.81
  5. Step 5: Solve for x
    x = 6,610,516,535.81/78,451.12
  6. Step 6: Final answer
    x = 84,262.87

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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.