Home / 90,830.76-136,268.02-28,501.26

Finding the Fourth Proportional to 90,830.76, 136,268.02 and 28,501.26

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Solution

The fourth proportional to 90,830.76, 136,268.02 and 28,501.26 is: 42,758.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,830.76 : 136,268.02 = 28,501.26 : x
  2. Step 2: Convert to fraction form
    90,830.76/136,268.02 = 28,501.26/x
  3. Step 3: Cross multiply
    90,830.76x = 136,268.02 × 28,501.26
  4. Step 4: Simplify right side
    90,830.76x = 3,883,810,267.71
  5. Step 5: Solve for x
    x = 3,883,810,267.71/90,830.76
  6. Step 6: Final answer
    x = 42,758.76

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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.