Home / 78,699.60-118,049.40-56,465.10

Finding the Fourth Proportional to 78,699.60, 118,049.40 and 56,465.10

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Solution

The fourth proportional to 78,699.60, 118,049.40 and 56,465.10 is: 84,697.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,699.60 : 118,049.40 = 56,465.10 : x
  2. Step 2: Convert to fraction form
    78,699.60/118,049.40 = 56,465.10/x
  3. Step 3: Cross multiply
    78,699.60x = 118,049.40 × 56,465.10
  4. Step 4: Simplify right side
    78,699.60x = 6,665,671,175.94
  5. Step 5: Solve for x
    x = 6,665,671,175.94/78,699.60
  6. Step 6: Final answer
    x = 84,697.65

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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.