Home / 78,665.98-118,037.04-39,228.70

Finding the Fourth Proportional to 78,665.98, 118,037.04 and 39,228.70

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Solution

The fourth proportional to 78,665.98, 118,037.04 and 39,228.70 is: 58,862.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,665.98 : 118,037.04 = 39,228.70 : x
  2. Step 2: Convert to fraction form
    78,665.98/118,037.04 = 39,228.70/x
  3. Step 3: Cross multiply
    78,665.98x = 118,037.04 × 39,228.70
  4. Step 4: Simplify right side
    78,665.98x = 4,630,439,631.05
  5. Step 5: Solve for x
    x = 4,630,439,631.05/78,665.98
  6. Step 6: Final answer
    x = 58,862.03

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1.5x scale

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.