Home / 85,946.08-128,751.60-48,391.36

Finding the Fourth Proportional to 85,946.08, 128,751.60 and 48,391.36

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Solution

The fourth proportional to 85,946.08, 128,751.60 and 48,391.36 is: 72,492.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,946.08 : 128,751.60 = 48,391.36 : x
  2. Step 2: Convert to fraction form
    85,946.08/128,751.60 = 48,391.36/x
  3. Step 3: Cross multiply
    85,946.08x = 128,751.60 × 48,391.36
  4. Step 4: Simplify right side
    85,946.08x = 6,230,465,026.18
  5. Step 5: Solve for x
    x = 6,230,465,026.18/85,946.08
  6. Step 6: Final answer
    x = 72,492.72

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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.