Home / 85,582.30-128,200.65-48,603.10

Finding the Fourth Proportional to 85,582.30, 128,200.65 and 48,603.10

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Solution

The fourth proportional to 85,582.30, 128,200.65 and 48,603.10 is: 72,806.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,582.30 : 128,200.65 = 48,603.10 : x
  2. Step 2: Convert to fraction form
    85,582.30/128,200.65 = 48,603.10/x
  3. Step 3: Cross multiply
    85,582.30x = 128,200.65 × 48,603.10
  4. Step 4: Simplify right side
    85,582.30x = 6,230,949,012.02
  5. Step 5: Solve for x
    x = 6,230,949,012.02/85,582.30
  6. Step 6: Final answer
    x = 72,806.52

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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.